Mexican Lasagna

Instructions

1. Preheat the oven. Fire up that oven to 375°F (190°C). Coat a 9x13-inch baking dish lightly with some olive oil.
2. Cook the filling: In a big skillet, heat up 1 tablespoon of olive oil over medium heat. Add the chopped onion and cook for about 3-4 minutes until it gets soft. Mix in the black beans, refried beans, corn, diced tomatoes, and taco seasoning. Stir it all well and cook for another 5-6 minutes till it's heated through. Set aside.
3. Layer the lasagna: Spread a bit of salsa on the bottom of your greased baking dish. Lay down 2 tortillas at the bottom. Spread out 1/3 of the bean mix over the tortillas and sprinkle 1/3 of your grated cheddar and mozzarella on top. 
4. Keep layering: Add more tortillas, more bean mix, and more cheese until you have used everything up. End with a layer of tortillas and lots of cheese.
5. Bake It Up: Cover your dish with foil and bake in the preheated oven for about 25 minutes. Then take off the foil and bake another 10 minutes until the cheese is bubbly and golden. Let it cool off a bit, around five minutes before slicing.
6. Serve: Dish up this yumminess with a dollop of sour cream or Greek yogurt on top and sprinkle some chopped cilantro and green onions if you would like and maybe some jalapeños to spice things up. Add guacamole and extra salsa on the side.

Tips and Variations:

1. Add Meat: Add ground beef, chicken, or turkey to your bean mix by browning it first with onions, or use leftover rotisserie chicken if you are pressed for time.
2. Make it Vegan: Use plant-based cheese alternatives and dairy-free sour cream, or just skip sour cream altogether, and you have yourself a vegan meal.
3. Flour vs. Corn Tortillas: Corn tortillas add more flavor, and flour ones give that classic lasagna feel.
4. Customize veggies: Add bell peppers, zucchini, or spinach; just sauté them first before mixing them.
5. Spice Level: Control how spicy by picking mild or hot salsa and tossing in some jalapeños, hot sauce too.
6. Meal Prep Friendly: Assemble ahead, then chill till ready-to-bake or freeze leftovers for easy reheating later.
7. Add Rice: For a fuller meal, add cooked rice into your layers that gives the heartier option.

Nutrition Information (per serving based on eight servings):

• Calories: You will get 400 calories with this meal.
• Protein: An amount of 14 g of protein is obtained with this meal, in which protein is very important for muscle repair and growth.
• Fat: An amount of 26 g is served, which helps you to keep on the diet track.
• Carbohydrates: Carbohydrates are the fuel source of the brain; here, 46 g of carbohydrates is obtained.
• Sugars: A 10g of sugar is contained here depending on the fruits and honey used.
• Fiber: 10 g of fiber is obtained here.
• Cholesterol: 35 mg of cholesterol is gained here.
• Sodium: 5 g of sodium is used.