Home Baked Macaroni and Cheese

1 pkg deluxe macaroni and cheese dinner

1 cup shredded cheddar cheese

1/2 cup sour cream

1/4 tsp pepper

6 ritz crackers, crushed

1 Tbsp butter, melted

Preheat oven to 375.  Prepare dinner as directed on package.  Stir in 1/2 cup of the cheddar cheese, sour cream, and pepper.  Spoon into greased 1 1/2 qt baking dish; sprinkle with remaining 1/2 cup cheddar cheese and the combined cracker crumbs and butter.  Bake 20 minutes.