2 lbs. ground beef
1 onion, browned
1 (18 oz.) pkg. noodles, cooked
1 can mushroom soup
1 1/2 cans milk
1/2 c. mild cheese (sharp)

Mix ground beef and noodles together, adding soup and milk. Pour into casserole, put on layer of cheese. Bake 45 minutes. Sprinkle with chow mein noodles. Bake 10 minutes.