Tex-Mex rice casserole bakes seasoned rice with ground beef, tomatoes, and melted cheese for a spicy family one-dish dinner. This protein-rich casserole is budget-friendly and perfect for busy weeknights.
Preheat your oven to 375°F and lightly grease a 9x13-inch casserole dish.
Heat olive oil in a large skillet over medium heat. Add diced onion and bell pepper, sauté until softened, about 5 minutes.
Add ground beef to the skillet and cook, stirring frequently, until fully browned. Drain any excess fat.
Stir in chili powder, cumin, salt, and black pepper. Add diced tomatoes and black beans, mixing thoroughly. Let simmer for 3 minutes.
Add rice and 2 3/4 cups water to the skillet, bring to a gentle simmer, then transfer the mixture to the prepared casserole dish.
Cover tightly with foil and bake for 30 minutes. Remove foil, sprinkle shredded cheddar cheese over the top, and bake uncovered for another 10 minutes, until the cheese is melted and bubbly.
Let rest for 5 minutes before serving to allow the casserole to set.