Easy Crabmeat Casserole

Ingredients

• 1 pound crabmeat, back fine
• 1/2 teaspoon dry mustard
• salt and pepper to taste
• 1/2 bottle capers
• 1 cup sour cream
• 1/2 teaspoon dill
• 1 heaping tablespoon mayonaise
• 1 teaspoon horseradish
• 1/2 cup bread crumbs
• 2 tablespoons butter