SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 1)

Susser Petroleum Partners LP

(Name of Issuer)

Common Units Representing Limited Partner Interests

(Title of Class of Securities)

869239 103

(CUSIP Number)

Martin Salinas, Jr.

Chief Financial Officer

Energy Transfer Partners, L.P.

3738 Oak Lawn Ave.

Dallas, Texas 75219

Tel: (214) 981-0700

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

August 29, 2014

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box:  ¨

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

(Continued on following pages)

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SCHEDULE 13D

Explanatory Note: This Amendment No. 1 (this “Amendment”) to the Schedule 13D originally filed on September 25, 2012 by certain of the Reporting Persons (as such term is defined below) (as amended by the Amendment, the “Schedule 13D”) is being filed to reflect (i) the acquisition through merger of Susser Holdings Corporation , a Delaware corporation (“Susser”), by Energy Transfer Partners, L.P., a Delaware limited partnership (“ETP”), which was completed on August 29, 2014 (the “Susser Acquisition”) and (ii) the contribution by ETC M-A Acquisition LLC, a Delaware limited liability company (“ETC”) to Susser Petroleum Partners LP, a Delaware limited partnership (the “Issuer” or “SUSP”) of all of the issued and outstanding membership interests of Mid-Atlantic Convenience Stores, LLC (“MACS”) in exchange for cash and common units representing limited partner interests (“Common Units”) of the Issuer (the “MACS Transaction”), each as more fully described in Item 3. As a result of the Susser Acquisition, the Susser Acquisition Reporting Persons (as defined below) may be deemed to beneficially own the Common Units and subordinated units representing limited partner interests (the “Subordinated Units” and collectively with the Common Units, the “Units”), of the Issuer beneficially owned by Susser as described in this Amendment.

The Reporting Persons named in Item 2 below are hereby jointly filing this Amendment because, due to certain affiliations and relationships among the Reporting Persons, such Reporting Persons may be deemed to beneficially own some or all of the same securities from the Issuer (as such term is defined below) deemed to be beneficially owned by one or more of the Reporting Persons. In accordance with Rule 13d-1(k)(1)(iii) promulgated pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), the Reporting Persons named in Item 2 below have executed a written agreement relating to the joint filing of this Amendment (the “Joint Filing Agreement”), a copy of which is annexed hereto as Exhibit A.

This Amendment relates to the Units. The address of the principal executive offices of the Issuer is 555 East Airtex Drive, Houston, Texas 77073.

(a)-(c) This Amendment is being filed jointly by:

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The Energy Transfer Reporting Persons and the ETP Holdco Reporting Persons are collectively referred to herein as the “Susser Acquisition Reporting Persons.” The Energy Transfer Reporting Persons and the ETC Reporting Persons are collectively referred to herein as the “MACS Transaction Reporting Persons.” The Energy Transfer Reporting Persons, the ETP Holdco Reporting Persons and the ETC Reporting Persons are collectively referred to herein as the “Reporting Persons.”

The principal business of Stripes is to engage, directly and indirectly through its subsidiaries, in the distribution and transportation of motor fuel and the operation of retail convenience stores, including through its ownership of limited partner interests in SUSP. The principal business of Stripes 1009 is to hold equity interests in SUSP and its other subsidiaries. Susser indirectly owns 100% of the membership interests of Stripes 1009 and Stripes. The principal business of Susser is to hold equity interests in its subsidiaries, operate retail convenience stores and engage in wholesale motor fuel distribution. The principal business of HHI is to hold equity interests in Susser and other entities. ETP Holdco is the sole stockholder of HHI. The principal business of ETP Holdco is to hold equity interests in Susser, HHI and other entities. The principal business of ETC is to hold equity interests in SUSP. La Grange is the sole member of ETC. The principal business of La Grange is to hold equity interests in ETC and its other subsidiaries. LA GP is the general partner of La Grange. The principal business of LA GP is to hold the general partner interest in La Grange. Heritage ETC is the sole stockholder of ETP Holdco and the sole member of LA GP. The principal business of Heritage ETC is to hold equity interests in ETP Holdco, LA GP and other entities. Heritage ETC GP is the general partner of Heritage ETC. The principal business of Heritage ETC GP is to hold the general partner interest in Heritage ETC. ETP is the sole member of Heritage ETC GP and the holder of a 99.999% limited partner interest in Heritage ETC. The principal business of ETP is to provide midstream services to producers and consumers of natural gas, NGLs, crude oil and refined products through its subsidiaries. ETP GP is the general partner of ETP. The principal business of ETP GP is to serve as the general partner of ETP. ETP LLC is the general partner of ETP GP. The principal business of ETP LLC is to serve as the general partner of ETP GP. ETE is the sole member of ETP LLC. The principal business of ETE is to hold equity interests in its subsidiaries and to acquire interests in other publicly traded partnerships, and to pursue certain opportunities to acquire or construct natural gas and liquids midstream or transportation assets. LE GP is the general partner of ETE and manages and directs all of ETE’s activities through LE GP’s board of directors. The members of LE GP have the authority to appoint and remove LE GP’s directors. Warren is the Chief Executive Officer of ETP. Warren owns 81.2% of LE GP. The principal office of each of the Reporting Persons is located at 3738 Oak Lawn Ave., Dallas, Texas 75219.

Attached hereto as Appendix A is information concerning the directors and executive officers of ETP LLC, LE GP, HHI, ETP Holdco, ETC, LA GP, Heritage ETC GP, Stripes 1009, Susser and Stripes (the “Listed Persons”) as to which such information is required to be disclosed in response to Item 2 and General Instruction C to Schedule 13D.

(d) During the last five years, none of the Reporting Persons or Listed Persons has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) During the last five years, none of the Reporting Persons or Listed Persons has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which he was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or a finding of any violation with respect to such laws.

(f) All of the persons listed in this Item 2, including those listed on Appendix A, are citizens of the United States of America.

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Stripes is the holder of 79,308 Common Units and 5,469,718 Subordinated Units of the Issuer and Stripes 1009 is the holder of 5,469,718 Subordinated Units of the Issuer.

Susser Acquisition

The Susser Acquisition Reporting Persons may be deemed to have acquired beneficial ownership of 11,018,744 Units of the Issuer through the Susser Acquisition.

As previously announced, on August 29, 2014, ETP completed the acquisition of Susser, pursuant to the terms of the Agreement and Plan of Merger, dated as of April 27, 2014 (the “Merger Agreement”), by and among ETP, ETP GP, Drive Acquisition Corporation, a wholly owned subsidiary of ETP (“Merger Sub”), HHI and, for certain limited purposes set forth in the Merger Agreement, ETE. Under the terms of the Merger Agreement, Merger Sub merged with and into Susser (the “Merger”), with Susser surviving the Merger.

Immediately prior to the closing of the Merger, (1) ETP drew down $1.2 billion on its revolving credit facility with Wells Fargo, National Association and the other lender parties thereto, (2) ETP made a loan (the “HHI Loan”) to HHI, in an amount equal to $1.2 billion, (3) HHI delivered to the exchange agent in the Merger, on behalf of Merger Sub, $874,507,321.88 in exchange for 50% of the issued and outstanding capital stock of Merger Sub and (4) ETP held for delivery to the exchange agent on Merger Sub’s behalf at the effective time of the merger the Unit Consideration (as defined below), in continuation of its ownership of 50% of the issued and outstanding capital stock of Merger Sub.

At the effective time of the Merger on August 29, 2014 (the “Effective Time”), all of the shares of Susser’s common stock issued and outstanding immediately prior to the Effective Time (other than shares held by Susser in treasury, dissenting shares and shares held directly by ETP or Merger Sub and other than shares held by subsidiaries of the parties) were converted into the right to receive an aggregate $874,507,321.88 in cash (the “Cash Consideration”) and 15,807,605 ETP common units (the “Unit Consideration”).

A copy of the Merger Agreement was filed as Exhibit 2.1 to the Current Report on Form 8-K filed by ETP with the Securities and Exchange Commission on April 28, 2014 and is incorporated herein by reference.

MACS Transaction

The MACS Transaction Reporting Persons may be deemed to have acquired beneficial ownership of 3,983,540 Units of the Issuer through the MACS Transaction.

On September 25, 2014, ETP entered into a Contribution Agreement (the “Contribution Agreement”) with MACS, ETC and SUSP, pursuant to which ETC agreed to sell to SUSP all of the issued and outstanding membership interests of MACS, and ETP agreed to guarantee all of the obligations of ETC under the Contribution Agreement. The MACS Transaction closed on October 1, 2014.

At the closing of the MACS Transaction, SUSP paid ETC $556 million in cash, subject to certain working capital adjustments (the “Cash Consideration”) and issued to ETC 3,983,540 Common Units of SUSP (collectively with the Cash Consideration, the “Contribution Consideration”). SUSP financed the Cash Consideration by utilizing availability under a new revolving credit facility. The Common Units issued to ETC as part of the Contribution Consideration were issued and sold by SUSP in a private transaction exempt from registration under Section 4(a)(2) of the Securities Act of 1933, as amended.

A copy of the Contribution Agreement was filed as Exhibit 2.1 to the Current Report on Form 8-K filed by SUSP with the Securities and Exchange Commission on October 1, 2014 and is incorporated herein by reference.

The information set forth or incorporated in Item 3 is incorporated herein by reference.

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(a) The Reporting Persons may make additional purchases of Units of the Issuer either in the open market or in private transactions depending on the Reporting Person’s business, prospects and financial condition, the market for Units of the Issuer, general economic conditions, stock market conditions and other future developments.

(b) None.

(c) None.

(d) Immediately following the closing of the Merger, (i) Rob L. Jones, David P. Engel, Frank A. Risch, Armand S. Shapiro, Bryan F. Smith Jr. and Sam J. Susser resigned from their respective positions on the board of directors (“SUSP GP Board”) of Susser Petroleum Partners GP LLC (“SUSP GP”), a Delaware limited liability company and the general partner of the Issuer, (ii) the size of the SUSP GP Board was increased to nine, (iii) Richard D. Brannon, Christopher Curia, Marshall S. McCrea III, Robert W. Owens, Matthew S. Ramsey, Martin Salinas, Jr., K. Rick Turner and William P. Williams were appointed to the SUSP GP Board, (iv) Rocky W. Dewbre was appointed Executive Vice President—Channel Operations of SUSP GP, (v) Gail S. Workman was appointed Senior Vice President—Sales and Operations of SUSP GP, and (vi) the following persons were appointed as officers of SUSP GP with the following titles: Robert W. Owens, President and Chief Executive Officer; Cynthia Archer, Executive Vice President and Chief Marketing Officer; Blake Heinemann, Executive Vice President—Retail Operations East; Clare P. McGrory, Senior Vice President—Finance & Investor Relations; Brad Williams, Senior Vice President—Retail Operations West; Christopher R. Curia, Senior Vice President—Human Resources; Teresa Gavigan, Vice President—Human Resources; Christopher B. Dial, Associate General Counsel and Secretary; and William J. Healy, Assistant Secretary. In addition, as previously disclosed, E.V. Bonner, Jr., who served as an officer of SUSP GP prior to the closing of the Merger, has left the Issuer.

(e) The Reporting Persons, as indirect owners of the general partner of the Issuer, may cause the Issuer to change its dividend policy or its capitalization, through the issuance of debt or equity securities, from time to time in the future. The Reporting Persons, however, have no current intention of changing the present capitalization or dividend policy of the Issuer.

(f) None.

(g) None.

(h) None.

(i) None.

(j) None.

Except as set forth in this Amendment and the Merger Agreement, the Reporting Persons have no present plans which relate to or would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D. The Reporting Persons may change their plans or proposals in the future. In determining from time to time whether to sell the Units reported as beneficially owned in this Amendment (and in what amounts) or to retain such securities, the Reporting Persons will take into consideration such factors as they deem relevant, including the business and prospects of the Issuer, anticipated future developments concerning the Issuer, existing and anticipated market conditions from time to time, general economic conditions, regulatory matters and other opportunities available to the Reporting Persons. The Reporting Persons reserve the right to acquire additional securities of the Issuer in the open market, in privately negotiated transactions (which may be with the Issuer or with third parties) or otherwise, to dispose of all or a portion of their holdings of securities of the Issuer or to change their intention with respect to any or all of the matters referred to in this Item 4.

(a) – (b) The aggregate number and percentage of Units beneficially owned by the Reporting Persons (on the basis of a total of 25,943,740 Units issued and outstanding as of October 24, 2014) are as follows:

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Stripes

Stripes 1009

Susser

HHI

ETP Holdco

ETC

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La Grange

LA GP

Heritage ETC

Heritage ETC GP

ETP

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ETP GP

ETP LLC

ETE

LE GP

Warren

(c) To the knowledge of the Reporting Persons, there have been no reportable transactions with respect to the Units of the Issuer within the last 60 days by the Reporting Persons, except as described in this Amendment.

(d) To the knowledge of the Reporting Persons, no person, other than the Reporting Persons, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Units covered by this Amendment.

(e) Not applicable.

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There are no contracts, arrangements, understandings or relationships with respect to the Units of the Issuer that require disclosure under this Item.

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Signature

After reasonable inquiry and to the best of their knowledge and belief, the undersigned certify that the information set forth in this Amendment is true, complete and correct.

Date: October 24, 2014

Exhibit A

JOINT FILING AGREEMENT AND POWER OF ATTORNEY

In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, each of the undersigned does hereby consent and agree to: (a) the joint filing on behalf of each of them of Amendment No. 1 to the Statement on Schedule 13D (the “Statement”) and any and all other amendments thereto with respect to the common units and subordinated units in Susser Petroleum Partners LP deemed to be beneficially owned by each of them, as applicable, (b) the appointment of Sonia Aube, William J. Healy and/or Peggy Harrison, all of whom may act individually, as Attorney-in-Fact to execute such Statement, any amendment thereto and/or Section 16 filing related thereto in the name and on behalf of the undersigned, and (c) the inclusion of this Joint Filing Agreement and Power of Attorney as an exhibit thereto.

Date: October 24, 2014

APPENDIX A

DIRECTORS AND EXECUTIVE OFFICERS OF ETP LLC AND LE GP

The following tables set forth the names, positions and present principal occupations or employment and business addresses of the directors and executive officers of ETP LLC, LE GP, HHI, ETP Holdco, Heritage ETC GP, Stripes 1009, Susser and Stripes. All the individuals listed below are citizens of the United States.

ETP LLC:

Appendix A

Page 1

LE GP:

HHI:

Appendix A

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Appendix A

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Appendix A

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Appendix A

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