In a medium bowl, mix together the cheeses, corn, green chiles, mayonnaise, chipotle pepper sauce and garlic powder. Pour mixture into a 1-1/2 quart baking dish. Bake for 20 minutes or until brown and bubbly.
2 cups (8 oz) shredded cheddar cheese, 1 cup (4 oz) shredded Monterey Jack cheese, 1 can (15.25 oz) corn, drained, 1 can (4 oz) diced green chiles or diced jalapenos, 1/2 cup mayonnaise, 2 tbsps chipotle peppers in adobo sauce, diced small (I used only the sauce), 1/4 tsp garlic powder