Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:

• Form S-8 No. 333-71768 pertaining to the IHOP Corp. 2001 Stock Incentive Plan of DineEquity, Inc. and Subsidiaries;

• Form S-8 No. 333-149771 pertaining to the IHOP Corp. 2005 Stock Incentive Plan for Non-Employee Directors; and

• Form S-8 No. 333-174847 pertaining to the DineEquity, Inc. 2011 Stock Incentive Plan

of our reports dated February 25, 2015, with respect to the consolidated financial statements of DineEquity, Inc. and Subsidiaries and the effectiveness of internal control over financial reporting of DineEquity, Inc. and Subsidiaries, included in this Annual Report (Form 10-K) for the year ended December 28, 2014.

/s/ Ernst & Young LLP

Los Angeles, California

February 25, 2015