Preheat oven to 350 degrees. Grease a 9x9-inch baking pan with oil or cooking spray and set aside.
Place one can of pinto beans, enchilada sauce or salsa, paprika, chili powder, cumin, and garlic powder in a blender or food processor and blend until smooth. Pour the blended mixture into the prepared pan, then stir in the remaining beans from the other can. Taste and adjust salt and freshly ground black pepper as needed.
Heat 1/2 tablespoon olive oil in a large skillet over medium heat. Add the 1/2 yellow onion (finely diced), 1 orange bell pepper (diced), and 3/4 cup fresh or frozen sweet corn and sauté for 3-5 minutes, until the onion and peppers soften. Add the cooked vegetable mixture to the pan with the beans.
Gently stir all the ingredients in the pan so they are well incorporated. Sprinkle 1 1/2 cups shredded Mexican blend cheese on top, cover the pan with foil, and bake for 20-25 minutes until the dip is bubbling along the edges and the cheese is melted. Garnish with jalapeño slices, avocado slices, diced cilantro, sliced cherry tomatoes, and crumbled Cotija or feta cheese, and serve immediately with tortilla chips for dipping.