Step 1: Preheat the Oven

• Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish and set it aside.

Step 2: Cook the Ground Beef

• Heat a large skillet over medium-high heat. Add the olive oil and sauté the diced onion until translucent, about 3-4 minutes.
• Add the minced garlic and cook for another minute, until fragrant.
• Add the ground beef, breaking it up with a spoon. Cook until browned, about 5-7 minutes. Drain any excess fat.

Step 3: Add Vegetables and Seasonings

• Stir in the diced bell pepper and cook for another 3 minutes.
• Add the black beans, diced tomatoes with green chilies, corn, chili powder, cumin, smoked paprika, ground coriander, salt, and pepper. Mix well and simmer for 5 minutes.

Step 4: Combine with Rice and Cheese

• Stir in the cooked rice until everything is well combined.
• Transfer the mixture into the prepared baking dish. Sprinkle the shredded cheddar and Monterey Jack cheeses evenly over the top.

Step 5: Bake the Casserole

• Place the dish in the preheated oven and bake for 20-25 minutes, or until the cheese is melted and bubbly.

Step 6: Make the Avocado Crema

• While the casserole bakes, prepare the avocado crema. In a small bowl, mash the avocados with a fork until smooth.
• Stir in the sour cream, lime juice, garlic powder, and a pinch of salt. Mix until creamy.

Step 7: Serve

• Remove the casserole from the oven and let it cool for 5 minutes. Garnish with chopped cilantro.
• Serve slices of the bake topped with a dollop of avocado crema