Goodbye, ground beef and popcorn chicken. Hello, crispy tofu and roasted chickpea tagine.

Starting next spring, 15 Brooklyn schools will begin “meatless Mondays” — an effort to make school lunches and breakfasts a little healthier and friendlier to the environment, officials said Monday.

The city has not yet picked the schools that will participate in the pilot program, and an education spokeswoman said the city will make decisions based on interest and public input. (Whether the city is prepared for a barrage of requests from health-minded Park Slope parents is another matter.)

The announcement comes less than two months after city officials made lunch free for all students regardless of income. Monday’s press conference was held at Brooklyn’s P.S. 1 — one of three district schools that only serves vegetarian fare — and drew Mayor Bill de Blasio, schools Chancellor Carmen Fariña, and Brooklyn Borough President Eric Adams.

“Cutting back a little on meat will help make our city healthier and our planet stronger for generations to come,” de Blasio said in a statement, adding that meat will no longer be served at Gracie Mansion on Mondays.

You can read more about the program here.