To prepare a whole wheat beef mushroom and spinach calzone recipe, you'll need: 1 1/2 cups rolled oats 2 tablespoons melted butter 1 tablespoon kosher salt 1 teaspoon ground black pepper 1/2 cup shredded mozzarella cheese 1 cup grated Parmesan cheese 1/4 cup chopped parsley Instructions: Preheat the oven to 450 degrees F. Lightly grease 2 x 8-inch baking pans with non-stick cooking spray. Spread the butter on the bottom and sides of each pan. Sprinkle the cheese with salt and pepper. Bake for 12 to 15 minutes or until the edges are golden brown. Remove from oven and allow to cool for 5 minutes before serving.