Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement of BancPlus Corporation (the

“Company”) on Form S-8 (No. 333-237427) filed March 27, 2020, and on Form S-8 (No. 333-239035)

filed June 9, 2020, of our report dated March 4, 2022, on our audits of the consolidated financial

statements of the Company as of December 31, 2021 and 2020, and for each of the years in the three-year

period ended December 31, 2021, which report is included in the Company’s Annual Report on Form

10-K.

/s/ BKD, LLP

Jackson, Mississippi

March 4, 2022