2 pkgs. frozen California Blend vegetables
2 c. cooked rice
1/4 c. (or less) chopped onion
1 stick butter (melt)
1 can cream of mushroom soup
1 (8 oz.) Cheez Whiz

Melt butter, soup and Cheez Whiz and mix with other ingredients. Bake at 350 degrees for 1/2 hour or more.