Green Pea Casserole

Name: Green Pea Casserole
Ingredients: 2 (14 1/2 ounce) cans green peas, drained (use a good brand); 1 (10 3/4 ounce) can condensed cream of mushroom & garlic soup (this should read Cream of Mushroom Soup with Roasted Garlic but it would not accept it); 1 cup sour cream (8 oz); 3⁄4 cup cheddar cheese, grated; 1⁄3 cup cheddar cheese, grated (I used 4 cheese Mexican blend but it would not accept that); 1⁄2 cup butter, melted; 1⁄2 teaspoon salt; 1 cup Ritz cracker, crushed; ground cayenne pepper (optional)