Squash Casserole - cooking recipe

Ingredients

2 c. cooked summer squash
1/2 stick butter
1 small onion, chopped
1 c. sour cream
1 can mushroom soup
1 pkg. Pepperidge Farm stuffing herb crumbs

Preparation

Butter casserole dish.
Sprinkle 1/2 of stuffing mix in a dish.
Mix rest of ingredients except butter and crumbs.