Onion Casserole - cooking recipe

Ingredients

3 to 4 onions
1 pkg. saltines (1/4 lb.), broken
1 can cream of mushroom soup
2 c. milk
1 egg
1/2 stick butter

Preparation

Wilt onions in butter.
Spray Pam in a casserole dish; put 1/2 cracker crumbs, 1/2 of onions and 1/2 mushroom soup; then another layer of each.
Beat egg and add to milk.
Pour over top of casserole and add butter to top.
Bake 30 minutes at 350\u00b0.