01 - In a large oven-proof skillet over medium-high heat, cook ground beef, crumbling with a spatula, until evenly browned. Drain excess fat if needed.
02 - Add diced onion, minced garlic, and red bell pepper to skillet. Sauté until vegetables are softened, approximately 3 to 4 minutes.
03 - Stir in drained black beans, ground cumin, chili powder, smoked paprika, salt, and black pepper. Mix thoroughly to combine flavors.
04 - Pour in enchilada sauce and tomato sauce, stirring to ensure an even distribution throughout the filling.
05 - Arrange half of the quartered corn tortillas over the beef mixture and evenly top with half the shredded cheeses. Repeat process with remaining tortillas and cheese.
06 - Lower heat to a gentle simmer, cover skillet, and cook for 5 to 7 minutes until cheese is fully melted and skillet is heated through.
07 - If a golden, bubbly top is desired, transfer skillet to broiler for 2 to 3 minutes, monitoring closely to prevent burning.
08 - Remove skillet from heat and garnish with sliced green onions, chopped cilantro, sour cream, or diced avocado as preferred. Serve immediately.