Directions

Preheat oven to 375°. In a large skillet, heat butter over medium-high heat. Add onion; saute until tender. Set aside.
Beat eggs; add sour cream, both cans of corn, salt and pepper. Stir in cornbread mix just until blended. Mince 1 jalapeno pepper; fold into corn mixture with sauteed onion and 1-1/2 cups cheese.
Transfer to a greased shallow 3-qt. baking dish. Sprinkle with remaining cheese. Bake, uncovered, until a toothpick inserted in center comes out clean, 35-40 minutes; cool slightly. Slice remaining jalapeno; sprinkle over dish.