Preheat oven to 400°. In a large skillet, heat oil over medium-high heat. Add sweet potato, onion and peppers; cook and stir 5-7 minutes or until potato is cooked halfway through., Stir in beans, corn, chiles, salt and cumin; heat through. Stir in broth and cream cheese until blended. Transfer to a greased 13x9-in. baking dish., In a large bowl, combine cornbread mix, egg, milk and pumpkin. Spoon over bean mixture. Bake, uncovered, 25-30 minutes or until a toothpick inserted in the topping portion comes out clean. To Make Ahead: Can be made a day in advance. Prepare as directed, omitting topping. Cover and refrigerate overnight. Remove from refrigerator 30 minutes before baking. Prepare topping and bake as directed.