1 lb. ground beef
1/4 c. chopped onion
1 can cream of mushroom soup
1/2 can Ro-Tel tomatoes
1/2 pkg. noodles, cooked
2 c. grated cheese

Brown the ground beef and onion; drain. Add cooked noodles and other ingredients. Put layer of meat mixture in casserole dish; cover with 1/2 the cheese. Add another layer of meat mixture and top with remaining cheese.

Bake at 350°F for 15 to 20 minutes or until the cheese is melted.