Vegetarian Mexican Casserole

Name: Vegetarian Mexican Casserole
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: Mexican
Ingredients: 1 medium red onion (diced); 8 cloves garlic (minced); 1 red bell pepper (diced); 1 cup frozen corn; 8 oz enchilada sauce; 14 oz diced fire roasted tomatoes; juice of 1 lime; 2 tablespoons cream cheese; 4 cups cooked white rice; 1 can black beans (drained); 1 teaspoon chili powder; 3 teaspoons cumin; 1/4 teaspoon cayenne; 1 teaspoon salt; 1/2 cup mexican cheese (plus more for topping); sour cream (for serving); tortilla chips (for serving)