Preheat oven to 400°.
Lightly spoon flour into a dry measuring cup; level with a knife. Combine flour, cornmeal, baking powder, 1/2 teaspoon salt, and pepper in a large bowl; stir well with a whisk.
Place corn and milk in a blender or food processor; process until smooth. Add 2 tablespoons butter, honey, and eggs; process until combined. Add milk mixture to cornmeal mixture; stir just until combined.
Spoon batter into a 13 x 9-inch baking dish coated with cooking spray. Bake at 400° for 15 minutes or until a wooden pick inserted in center comes out clean. Cool in pan 5 minutes on a wire rack. Lightly brush corn bread with remaining 1 tablespoon butter; sprinkle evenly with remaining 1/4 teaspoon salt. Serve warm, or cool completely in pan on a wire rack.