Squash Casserole - cooking recipe

Ingredients

4 c. cooked yellow squash, mashed
1 carton sour cream (small)
1 can cream of chicken soup
1 small grated carrot (optional)
1 small onion
1 pkg. Pepperidge Farm herb dressing (8 oz.)
1 egg
1/2 stick butter

Preparation

Melt 1/2 oleo in casserole dish and put rest on top.