Crockpot Mexican Casserole

Name: Crockpot Mexican Casserole
Prep time: 15 min
Cook time: 4 h 15 min
Total time: 4 h 30 min
Cuisine: Mexican
Ingredients: 2 pounds lean ground beef; 1 onion diced; 4 cloves garlic minced; 1 ounce taco seasoning; 15 ounces black beans rinsed and drained; 10 ounces red enchilada sauce; 10 ounces tomatoes and green chilies diced; 10 ounces frozen corn kernels; 1 ½ cups beef broth or water; 1 cup long grain white rice (parboiled) uncooked; 1 large green bell pepper diced; 1 large red bell pepper diced; 1 cup mexican/fiesta blend cheese shredded

By:

jeremy

Published:

September 3, 2026

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Crockpot Mexican Casserole is one of those comforting dishes that warms your heart and fills your belly with cozy goodness. Think layers of flavor-packed ground beef, vibrant peppers, and savory spices melding together in a rich, creamy casserole that you can whip up with minimal effort. The beauty of this recipe lies in its ease of preparation; just toss your ingredients into a crockpot, set the timer, and let the magic happen. The result? An irresistibly hearty meal that’s perfect for busy weeknights or weekend gatherings.

When I first discovered this Crockpot Mexican Casserole, it quickly became a family favorite. Each spoonful brings a party of flavors in every bite, making it a cherished recipe that I’ve turned to time and again. It’s budget-friendly, satisfying, and gives you that homemade warmth, all while being incredibly simple to prepare. If you’re looking for an easy way to feed a crowd, or just want a tasty dish ready when you walk in the door, you’ll love this recipe!

Why You’ll Love This Recipe

Simple & Quick: With prep taking just 15 minutes, you can set it and forget it!
Irresistible Flavor: The combination of spices and fresh ingredients creates a burst of flavor.
Eye-Catching Appeal: The colorful mix of peppers and melted cheese makes it a feast for the eyes.
Flexible Serving: Perfect for family dinners, potlucks, or game day snacks.
Diet-Friendly Options: Easily adaptable for vegetarian diets—just swap in beans for beef!

Ingredients You’ll Need

2 pounds lean ground beef – Adds protein and richness. You can substitute turkey or chicken for a leaner option.
1 onion, diced – Provides a base of flavor; yellow or white onions work best here.
4 cloves garlic, minced – Infuses the casserole with aromatic goodness.
1 ounce taco seasoning – A blend of spices to add that quintessential taco flavor; store-bought or homemade works!
15 ounces black beans, rinsed and drained – Offers fiber and balancing earthiness; pinto or kidney beans are also good substitutes.
10 ounces red enchilada sauce – Gives the dish a zesty kick; you can use green enchilada sauce for a different flavor profile.
10 ounces tomatoes and green chilies, diced – Adds moisture and brightness; Rotel is a great choice!
10 ounces frozen corn kernels – Sweetness and texture; fresh corn can be used in season.
1 ½ cups beef broth or water – Helps cook the rice to perfection; vegetable broth can be used for a vegetarian version.
1 cup long grain white rice (parboiled), uncooked – The base that helps thicken the casserole as it cooks; avoid instant rice as it won’t cook properly here.
1 large green bell pepper, diced – Adds crunch and freshness; feel free to experiment with other peppers like yellow or orange.
1 large red bell pepper, diced – Brightens up the dish visually and taste-wise with its sweetness.
1 cup Mexican/fiesta blend cheese, shredded – Melts beautifully on top, but feel free to use any cheese you like!

How to Make Crockpot Mexican Casserole

Brown the Ground Beef: Start by heating a large skillet over medium-high heat. Once hot, add 2 pounds of lean ground beef, cooking and crumbling it until no longer pink. Drain any excess grease to keep it from becoming greasy.
Add Aromatics: Toss in 1 diced onion and 4 cloves of minced garlic to the skillet. Cook, stirring occasionally, until the onions are softened and translucent—about 3-4 minutes. The smell will be heavenly!
Mix the Seasoning: Sprinkle in 1 ounce of taco seasoning and stir well to coat the beef and vegetables uniformly. This is where the magic begins!
Transfer to Crockpot: Carefully transfer the beef mixture to your crockpot.
Layer the Ingredients: Now, add 15 ounces of black beans (rinsed and drained), 10 ounces of red enchilada sauce, 10 ounces of diced tomatoes and green chilies, 10 ounces of frozen corn, 1 ½ cups of beef broth (or water), 1 cup of uncooked long grain white rice, 1 diced green bell pepper, and 1 diced red bell pepper. Stir everything together gently to distribute the ingredients evenly in the crockpot.
Set to Cook: Cover and cook on low for 4-5 hours or high for 2 ½-3 hours. The rice should be tender, and everything should be bubbling by the time it’s done.
Add the Cheese: Once the cooking time is up, sprinkle 1 cup of shredded Mexican blend cheese on top. Cover with the lid for about 5 minutes to allow the cheese to melt beautifully.
Serve with Love: Scoop out servings and add your favorite toppings like sour cream, cilantro, or avocado for that extra zing!

Storing & Reheating

To store your Crockpot Mexican Casserole, let it cool completely before placing it in an airtight container. It can sit at room temperature for around 2 hours before refrigeration. In the fridge, it’ll stay fresh for up to 4 days. If you want to keep it for longer, freeze the casserole in portioned containers for up to 3 months. When you’re ready to enjoy it again, simply reheat in the microwave or on the stovetop until hot, remembering that the texture might change slightly. A splash of water can help refresh it!

Chef’s Helpful Tips

Don’t skip draining the grease after browning the beef; this will prevent a greasy dish.
If you prefer a creamier texture, use half-and-half instead of broth.
For a little extra flavor, consider adding a chopped jalapeño or some red pepper flakes for a kick!
If you have leftovers, try them in burritos or on nachos for a fun spin.
Keep an eye on the cooking time; if using brown rice instead of white, it will require more liquid and time.

The modest charm of Crockpot Mexican Casserole makes it a fantastic dish for any occasion, bringing together family and friends around the dinner table. Not only is it easy on the wallet, but it also allows for endless personal touches. Feel free to swap ingredients based on your preferences or what you have on hand—this recipe is very forgiving and can fit a variety of tastes.

You’ll soon find that this dish earns a cherished spot among your favorites, and you’ll love how it fills your kitchen with lovely scents as it simmers. So, gather your family, put on that apron, and let’s savor the flavors of this delightful casserole together!

Recipe FAQs

Can I make this casserole vegetarian?

Absolutely! You can easily swap the ground beef for an extra can of black beans, lentils, or even some sautéed mushrooms for that meaty texture. Just be sure to use vegetable broth in place of beef broth for flavor.

What if I don’t have a crockpot?

No problem! You can make this casserole in a large oven-safe dish. Preheat your oven to 350°F (175°C) and bake covered with foil for about 45-60 minutes, or until the rice is tender.

Can I freeze the leftovers?

Yes! This casserole freezes well. Just let it cool completely, then store in an airtight container or a freezer bag for up to 3 months. To reheat, allow it to thaw overnight in the fridge and then warm through in the oven or microwave.

Can I add more vegetables?

Absolutely! Feel free to toss in anything you like. Zucchini, carrots, or even spinach are great additions that will boost the nutritional value and add some color to your casserole. Just chop them up and mix them in with the other ingredients!