Crumble ground beef in 2 1/2 -quart casserole.
Microwave 4 to 5 minutes on HIGH, or until meat is no longer pink.
Drain excess fat.
Mix in beans, chili and corn.
Carefully stir in cheese cubes.
Microwave 10 to 12 minutes on 8 or until mixture is heated through and cheese cubes have started to melt.
Let stand 10 minutes, covered.
For ovens without solid state heat control, during second cooking period Microwave 8 to 10 minutes on HIGH, rotating dish 1/2 turn after 4 minutes.