Step 1

Preheat oven to 400 degrees. Rub a baking dish or oven-proof skillet with butter.

Step 2

In a large skillet over medium-high heat, melt butter until foaming. Add corn, bell peppers, onion, jalapeño, and 1 teaspoon salt and cook until softened, about 7 to 10 minutes. Stir in garlic until fragrant, about 30 seconds. Remove from heat and cool 5 minutes.

Step 3

Meanwhile, in a large bowl combine cream cheese, mayonnaise, and sour cream until completely smooth. Stir in half the mozzarella cheese, green chiles, scallions, and chili powder. Carefully fold in corn mixture and season to taste with salt and pepper.

Step 4

Spread into prepared baking dish and top with remaining 4 ounces mozzarella. Bake uncovered until hot and bubbly, 20 to 25 minutes. Remove from oven and garnish with scallions and cilantro if desired. Serve hot with tortilla chips.