2 pkgs. frozen lima beans
2 pkgs. frozen peas
2 pkgs. frozen cut green beans
1 c. mayonnaise
1 c. sour cream
1 c. Parmesan cheese
Salt & pepper to taste
1 c. diced onion

Cook frozen vegetables according to package directions. Drain vegetables. Saute onion until tender. Stir in sour cream, butter, salt and pepper. Fold in vegetables. Put in greased casserole. Top with Parmesan cheese. Cook 20 minutes at 350 degrees.