1Place a rack in upper third of oven; preheat oven to 375°F. Coat a 9-inch square baking pan with cooking spray; set aside.
2Combine cornmeal, flour, sugar, baking powder, cumin and salt in a medium bowl.
3In a small bowl, mix together the milk, butter and eggs. Add milk mixture to the cornmeal mixture, and stir just until almost combined. Add the corn, bell pepper, scallions and jalapeno, and stir just until combined. Spoon batter into the prepared baking pan.
4Bake until lightly browned and a butter knife inserted in center comes out clean, about 25 minutes. Cool on a wire rack for 10 minutes before cutting; serve warm.