Preheat oven to 400 degrees. Coat a 2 quart baking dish with cooking spray. In baking dish, combine hot dogs, beans, Mexicorn, salsa, and 1/2 cup cheddar cheese. Top with tater-tops in single layer. Bake for 30 minutes. Sprinkle with remaining cheese. Bake until hot and bubbly and cheese is melted (about 3-5 minutes).