1 lb. lean ground beef
1 onion, chopped
1 (10 oz.) pkg. frozen mixed vegetables
1 can cream of mushroom soup
1/2 c. milk
1 pkg. frozen tater tots

Crumble raw ground beef in the bottom of a well oiled 9 x 13 inch pan. Layer with the onion then the vegetables. Mix the milk and soup and heat until smooth. Pour over the vegetables and cover all with tater tots. Bake at 350 degrees for 1 hour. This can be made ahead and baked later.