Shoreline Casserole

Ingredients

• 2 tablespoons butter, divided
• 1 pound uncooked medium shrimp, peeled and deveined
• 12 ounces fresh mushrooms, sliced
• 1 large green pepper, chopped
• 1 medium onion, chopped
• 3 tablespoons all-purpose flour
• 3/4 teaspoon salt
• 1/8 teaspoon cayenne pepper
• 1 1/3 cups fat-free milk
• 3 cups brown rice, cooked
• 1 cup reduced-fat cheddar cheese, shredded, divided