MELT butter in saucepan. Stir in barbecue sauce, piquante peppers and chile powder; simmer 15 min., stirring occasionally.
FOR each serving: Place 1 lb. ribs in shallow pan; brush with 1/2 cup sauce. Bake in 350ºF standard oven 10 min. or until heated through.
SERVE with 7 grilled peppers and 3/4 cup (4 oz.) corn.