1 (10 oz.) pkg. frozen broccoli
1 (10 oz.) pkg. frozen cauliflower
1 (10 oz.) pkg frozen Brussels sprouts
2 cans cream of mushroom soup
6 slices American cheese

Put vegetables in a pan. Parboil 5 minutes. Arrange in baking dish. Pour over vegetables, 2 cans of undiluted cream of mushroom soup. Bake at 350 degrees for 30 minutes. Remove from oven. Top with 6 slices of American cheese. Bake for about 15 minutes until cheese melts.