1 pkg. club crackers
1 stick butter
2 cans green beans
4 oz. water chestnuts, drained
4 oz. sliced mushrooms, drained
1 c. Pet milk
1 can cream of mushroom soup, undiluted

Crush package club crackers and mix with melted butter. Put 1/2 of mixture in bottom of large casserole dish. Mix remaining ingredients and pour over crust. Sprinkle the remaining cracker mixture over top. Bake at 350 degrees for 30 minutes.