When you need a meal that’s comforting, filling, family-friendly, and packed with bold flavor, Mexican Ground Beef Casserole with Rice checks every box. This dish combines seasoned ground beef, fluffy rice, tomatoes, beans, corn, and gooey melted cheese into one irresistible baked casserole. It’s the kind of recipe that feels cozy and familiar, yet exciting enough to keep everyone coming back for seconds.

Casseroles have long been a staple in home kitchens because they’re practical, economical, and perfect for feeding a crowd. This Mexican-inspired version takes those classic casserole qualities and infuses them with Tex-Mex flavors that are deeply satisfying. Whether you’re cooking for a busy weeknight, a casual gathering, or meal prep for the week ahead, this dish delivers every time.

What makes this ground beef rice casserole especially appealing is its flexibility. You can adjust the spice level, swap ingredients based on what you have on hand, or even make it ahead of time and bake later. It’s hearty enough to stand alone as a complete meal, yet pairs beautifully with simple sides like a green salad or warm tortillas.

Why You’ll Love This Mexican Ground Beef Casserole

There are countless casserole recipes out there, but this one stands out for several reasons:

First, it’s incredibly easy to prepare. Everything comes together in a single skillet and baking dish, making cleanup minimal. Second, it’s budget-friendly, relying on pantry staples like rice, canned tomatoes, and beans. Third, it’s packed with flavor thanks to a blend of spices that give it that unmistakable Mexican-inspired taste.

Another reason this casserole shines is how well it reheats. The flavors actually deepen overnight, making leftovers even better the next day. If you’re someone who loves make-ahead meals, this recipe is a dream come true.

Ingredients for Mexican Ground Beef Casserole with Rice

Use fresh, simple ingredients to build layers of flavor and texture.

Ground beef (lean preferred)
Long-grain white rice (uncooked)
Onion, finely diced
Garlic cloves, minced
Canned diced tomatoes (with juices)
Tomato sauce
Black beans, drained and rinsed
Corn kernels (fresh, frozen, or canned)
Shredded cheddar cheese
Shredded Monterey Jack cheese
Olive oil
Chili powder
Ground cumin
Paprika
Salt
Black pepper
Water or beef broth
Fresh cilantro (optional, for garnish)
Jalapeño slices (optional, for topping)

Step-by-Step Instructions

Preheat the oven to 375°F (190°C). Lightly grease a medium baking dish and set aside.
Cook the ground beef in a large skillet over medium heat with olive oil. Add the diced onion and cook until softened. Stir in the garlic and cook briefly until fragrant.
Season the beef with chili powder, cumin, paprika, salt, and black pepper. Stir well to coat the meat evenly.
Add tomatoes and sauce. Pour in the diced tomatoes with their juices and the tomato sauce. Stir to combine.
Incorporate rice and liquid. Add the uncooked rice and water or beef broth. Stir well, ensuring the rice is fully submerged.
Mix in beans and corn, then bring the mixture to a gentle simmer.
Transfer to baking dish. Cover tightly with foil and bake for about 30–35 minutes, or until the rice is tender.
Add cheese. Remove foil, sprinkle shredded cheeses evenly over the top, and return to the oven uncovered.
Bake until bubbly, about 10–15 minutes, until the cheese is melted and lightly golden.
Rest and serve. Let the casserole sit for 5–10 minutes before serving. Garnish with cilantro or jalapeños if desired.

Tips for the Best Ground Beef Rice Casserole

Use lean ground beef to avoid excess grease in the casserole.
Don’t skip resting time after baking; it helps the casserole set properly.
Adjust spice levels by adding cayenne pepper or reducing chili powder.
Shred your own cheese for better melting and flavor.

Easy Variations to Try

One of the best things about this Mexican casserole with rice is how customizable it is.

For a spicier version, add diced green chilies or a splash of hot sauce.
For a healthier twist, use brown rice (adjust cooking time) or ground turkey.
For a vegetarian option, replace ground beef with sautéed mushrooms or plant-based crumbles.
For a creamy casserole, stir in a small amount of sour cream before baking.

Serving Suggestions

Serve this casserole with simple sides that complement its bold flavors. A crisp green salad with lime dressing works beautifully. Warm tortillas or tortilla chips add crunch, while guacamole or salsa bring freshness to the plate. For drinks, a cold glass of iced tea or citrus-infused water balances the richness perfectly.

Cultural Inspiration Behind the Dish

While this casserole isn’t a traditional Mexican recipe, it draws inspiration from Tex-Mex cooking—a fusion of Mexican flavors and American comfort food traditions. Ingredients like rice, beans, beef, and spices reflect the heart of Tex-Mex cuisine, adapted into a baked format that suits busy home cooks.

Make-Ahead and Storage Tips

This dish is ideal for meal prep. Assemble the casserole up to one day ahead, cover tightly, and refrigerate. Bake when ready, adding a few extra minutes if baking straight from cold. Leftovers keep well in the refrigerator for up to 4 days and freeze beautifully for up to 2 months.

Final Thoughts

Mexican Ground Beef Casserole with Rice is everything a great dinner should be: comforting, flavorful, easy, and satisfying. It’s perfect for families, gatherings, or anyone who loves bold Tex-Mex flavors in a cozy baked dish. Once you try it, this casserole is bound to become a regular on your dinner rotation.