3 tablespoons butter, softened $ 3 large egg whites $ 1 (8-ounce) block fat-free cream cheese, softened $ 1/2 cup finely chopped onion $ 1/2 cup finely chopped red bell pepper $ 1 (15 1/4-ounce) can whole-kernel corn, drained $ 1 (14 3/4-ounce) can cream-style corn $ 1 (8 1/2-ounce) package corn muffin mix (such as Jiffy) 1/4 teaspoon black pepper Cooking spray

Preheat oven to 375°.
Combine first 3 ingredients in a large bowl, stirring with a whisk until smooth. Stir in onion, bell pepper, whole-kernel corn, and cream-style corn; mix well. Add muffin mix and black pepper, stirring until well combined. Pour into an 11 x 7-inch baking dish coated with cooking spray. Bake at 375° for 50 minutes or until a wooden pick inserted in center comes out clean.