1 1/4 c. mayonnaise
1 (1 oz.) pkg. Ranch style salad dressing mix
2 (16 oz.) cans cut green beans
2 (8 oz.) cans sliced water chestnuts, drained
All Natural butter flavor Pam
1/4 c. Parmesan cheese
1/2 c. cracker crumbs

Combine mayonnaise and salad dressing mix in a medium bowl, stirring until thoroughly mixed. Stir in green beans and water chestnuts. Spoon mixture into 1 quart casserole coated with cooking spray. Combine cheese and cracker crumbs; sprinkle over the bean mixture and bake at 350 degrees for 30 minutes.