1-1/2LB. GROUND BEEF, BROWNED, 1 BAG DORITOS, 1 CAN PINTO BEANS, 1-1/2CAN WHOLE CORN, 1-10OZ, RO-TEL TOMATOES,CHOPPED, 1 CAN CREAM OF MUSHROOM SOUP, ONION, 1C. GRATED CHEESE, BROWN BEEF AND ONION, DRAIN, SPREAD DORITOS. MIX OTHER INGREDIENTS; POUR OVER MEAT. BAKE COVERED WITH FOIL 30 MINUTES AT 375 IN A 9X13-INCH PAN, ADD CHEESE HALF WAY THROUGH.