A delicious and easy-to-make casserole featuring layers of tortillas, seasoned beef, and a cheesy topping.
Preheat your oven to 375°F (190°C).
Always preheat your oven to ensure even cooking.
Grease a 13x9-inch baking dish with cooking spray or a light coat of oil.
This prevents sticking and makes cleanup easier.
Line the baking dish with tortillas, ensuring they cover the bottom and sides.
Overlap the tortillas slightly for full coverage.
In a skillet, cook the ground beef, onion, and bell pepper over medium heat until the beef is browned and vegetables are softened.
Break up the beef as it cooks for even browning.
Drain any excess fat and stir in the tomato sauce. Simmer for 2 minutes.
Simmering allows the flavors to meld together.
Spread the beef mixture evenly over the tortillas in the baking dish.
Distribute the filling evenly for consistent layers.
Sprinkle the shredded cheeses over the beef mixture.
Use a mix of cheeses for a richer flavor.
In a mixing bowl, whisk together the milk, eggs, and biscuit mix until smooth.
Whisking thoroughly ensures a smooth batter.
Pour the batter evenly over the cheese layer.
Pour slowly to avoid disturbing the layers.
Bake in the preheated oven for 35-40 minutes, or until a knife inserted in the center comes out clean.
Check for doneness by inserting a knife into the center.
Let the casserole cool for 10 minutes before slicing and serving.
Cooling allows the casserole to set for easier slicing.
Top with shredded lettuce, diced tomatoes, green onions, and a dollop of sour cream before serving.
Add garnishes just before serving for freshness.