Mexican Casserole Easy Weeknight Dinner Layered With Beans and Cheese

Golden cheese bubbles over crispy tortilla strips, black beans, and spiced beef in this Mexican casserole. Ready in 50 minutes, this cheesy weeknight win feeds a hungry crowd and leaves nobody wanting more.

Why This Recipe Works

• Bloom the spices in hot oil: Chili powder and cumin release their fat-soluble flavor in warm oil. The filling tastes deep and fragrant instead of dusty.
• Drain canned ingredients thoroughly before mixing: Extra liquid steams the filling and thins it out. Well-drained beans and tomatoes keep every layer thick and scoopable.
• Simmer until the filling thickens: Reducing the sauce concentrates the enchilada flavor and helps the filling cling to each tortilla strip. Loose sauce would pool at the bottom of the dish.
• Rest the casserole before slicing: Ten minutes lets the cheese and starches set, so clean squares hold their shape instead of collapsing onto the plate.

Ingredients You'll Need

Ground Beef: This hearty base gives the casserole its meaty, satisfying bite. Cook it until no pink remains, then drain it well so the filling stays thick. Ground turkey or shredded chicken, cooked and drained, works just as well.

Olive Oil: Olive oil gives the onion and spices a smooth, fruity start. It keeps the pan from sticking while the aromatics sizzle. Use a neutral vegetable oil, like canola, in the same amount if that's what you have.

Yellow Onion: One medium onion, finely diced, melts into the filling and adds gentle sweetness. Cook it until soft and translucent, stirring often. White onion is a good swap if yellow isn't handy.

Garlic: Two cloves, minced, bring savory punch that rounds out the spices. Mince them fine so the flavor spreads through every bite. Garlic powder can stand in, about ½ teaspoon, though fresh tastes brighter.

Chili Powder: One tablespoon brings warm, earthy heat and that classic Mexican flavor. Let it cook in the pan for a minute so it tastes rich, not dusty. Ancho chili powder is a milder, fruitier swap.

Ground Cumin: One teaspoon adds smoky, nutty depth that makes the filling taste truly authentic. Stir it in with the chili powder so it coats the onions evenly. Ground coriander is a softer stand-in, though the flavor shifts a little.

Kosher Salt: One teaspoon seasons the beef and beans without tasting harsh. Its flakes dissolve easily and spread evenly through the pan. Table salt works too, but use roughly three-quarters of a teaspoon.

Black Pepper: Half a teaspoon of freshly ground pepper adds a gentle, woody bite. It wakes up the cumin and chili without overpowering them. Ground white pepper is a fine swap if you want no black specks.

Black Beans: One drained and rinsed can adds creamy body and earthy protein. Rinsing washes away starchy canning liquid, keeping the filling scoopable. Pinto beans are a good swap with a similar soft, mild texture.

Corn: One cup of corn brings little pops of sweetness that balance the chili. Fresh, frozen, or canned all work. Drain canned corn well, or it will thin out the filling.

Red Enchilada Sauce: One 10-ounce can gives the casserole its signature color and tangy, chili-forward flavor. It soaks into the tortilla strips and holds the layers together. A mild red salsa thinned with a splash of tomato sauce works if you're out.

Diced Tomatoes with Green Chiles: One 14.5-ounce can, drained, adds bright acidity and a mild kick of heat. Draining keeps the filling thick enough to layer. Plain diced tomatoes with a little chopped jalapeño make a fine swap.

Corn Tortillas: Six tortillas, cut into ¼-inch strips, turn tender and soak up the sauce. Corn tastes earthier than flour and holds its shape. Flour tortillas work in a pinch, though they turn softer.

Mexican-Blend Cheese: Two cups, divided, melt into golden, bubbly layers. Shred the cheese yourself if you can, since pre-shredded packs often slow melting. Monterey Jack and cheddar together make a fine stand-in.

Fresh Cilantro: A quarter cup of chopped cilantro adds bright, herby freshness on top. Add it right before serving so it stays green and lively. Flat-leaf parsley is a milder finish if you don't love cilantro.

Ingredients You'll Need

This comes together in one skillet and one baking dish, from a spiced filling to a golden, bubbling bake. Even if you've never layered a casserole before, you'll nail it on your first try.

1. Preheat the oven and grease a 9x13-inch baking dish until the oven is fully hot, 10-15 minutes at 375°F / 190°C. Grab a sturdy dish, because this casserole is hearty.

2. Heat the olive oil in a large skillet and cook the finely diced onion until soft and translucent, 4-5 minutes at medium heat (350°F / 175°C). Stir often so it doesn't brown too fast.

3. Stir in the minced garlic, chili powder, cumin, salt, and black pepper until the kitchen smells amazing, 1-2 minutes at medium heat (350°F / 175°C). The spices should look evenly coated and slightly darker.

4. Add the cooked, drained ground beef and stir until it is coated and heated through, 3-4 minutes at medium heat (350°F / 175°C). The meat should look glossy and reddish-brown.

5. Stir in the black beans, corn, red enchilada sauce, and drained diced tomatoes with green chiles. Simmer until the filling thickens and bubbles, 8-10 minutes at medium-low heat (300°F / 150°C).

6. Scatter half the corn tortilla strips across the bottom of the baking dish. Spoon half the filling over them and sprinkle 1 cup of the cheese on top, 2-3 minutes at room temperature (70°F / 21°C).

7. Repeat with the remaining tortilla strips and filling, then top with the last 1 cup of cheese until the surface is evenly covered, 2-3 minutes at room temperature (70°F / 21°C). Press the layers gently so they settle.

8. Bake uncovered until the cheese melts golden-brown and the edges bubble, 25-30 minutes at 375°F / 190°C. Watch for deep golden spots on top.

9. Let the casserole rest until the layers set and the cheese turns glossy, 10 minutes at room temperature (70°F / 21°C). Scatter the chopped fresh cilantro over the top before serving.

Recipe Notes

• Storage: Keep leftovers covered in the fridge for up to 4 days. It freezes well for up to 3 months. Reheat portions covered with foil at 350°F until steaming hot.
• Key substitution: Can't find diced tomatoes with green chiles? Use a plain can of diced tomatoes plus one minced jalapeño. Keep the seeds for extra heat.
• Make-ahead tip: Cook the filling up to two days ahead and refrigerate it. You can also assemble the whole casserole the night before, then bake it straight from cold.
• Common mistake: Cutting the tortilla strips too thick leaves chewy, stubborn bites. Keep them at ¼-inch so the filling softens every piece.

Serving size: 1 portion · Calories: 420 · Total Fat: 18g · Saturated Fat: 8g · Carbs: 42g · Fiber: 8g · Sugar: 6g · Protein: 24g · Sodium: 980mg

Tips and Tricks

• Equipment: Use a sturdy 9x13-inch baking dish: Its wide, low walls spread the layers thin, so the cheese and tortilla edges crisp evenly.

• Temperature precision: Bake at 375°F, not hotter: At 375°F, the cheese melts golden and the edges bubble in 25-30 minutes. Go hotter and the top scorches before the center heats through.

• Common mistake: Skipping the gentle press: Loose layers trap air pockets that make the casserole crumble when you cut it. Press each layer lightly so it settles into one sliceable block.

• Flavour upgrade: Finish with a squeeze of lime: A bright squeeze over the cilantro lifts the smoky chili and cumin. Add it just before serving so the herbs stay fresh.

• Texture tip: Bake uncovered for crispy edges: Uncovered baking lets the cheese brown and the corner tortilla strips crisp. Scoop from the edges for crunch, and from the center for creamy, saucy bites.

Frequently Asked Questions

Can I make this Mexican casserole vegetarian or gluten-free without changing the recipe?

Swap the 1 pound of meat for 1 pound of plant-based crumbles or one extra 15 oz can of black beans, and the dish stays vegetarian. For gluten-free, check that the chili powder and enchilada sauce are labeled gluten-free, since the corn tortillas are already safe.

How long does leftover Mexican casserole keep, and how should I reheat it?

Refrigerate covered leftovers for up to 4 days, or freeze portions for up to 3 months. Reheat individual portions covered with foil at 350°F until steaming hot, about 15 to 20 minutes.

Why does my casserole turn out soupy in the middle after baking?

Tilt the dish gently, and if liquid sloshes in the center, bake 5 more minutes uncovered until the bubbles reach the middle. Corn strips soak up sauce as they bake, so a slightly loose center is normal and firms up while resting.

What to Serve With This

• Cilantro-Lime Cabbage Slaw: Crisp shredded cabbage and bright lime juice cut through the cheesy richness and make every bite feel lighter.
• Sliced Avocado with Lime: Cool, buttery avocado softens against the crispy tortilla edges and calms the spice.
• Pickled Red Onion: Quick-pickled onion brings a sharp vinegar snap that wakes up the savory beef and melted cheese.
• Lime Fruit Salad: Juicy mango, pineapple, and orange with a squeeze of lime gives a sweet, refreshing contrast to the hearty casserole.