Heat oven to 350 degrees.

Cook and stir ground beef, onion and garlic in 10" skillet until beef is
brown; drain.

Mix beef mixture, mustard, pork and beans and tomato sauce in ungreased 1
1/2 quart round casserole.

Prepare Drop Biscuits as directed.

Drop by 6 spoonfuls onto beef mixture; sprinkle with cornmeal mixture.

Bake uncovered until biscuits are golden brown, 25 to 30 minutes.