Slow Cooker Taco Casserole is the easiest, all-in-one dish that you can assemble in minutes, with no precooking required. It’s ready in just a few hours and packed with melted cheese, veggies, and tortilla chips for a simple, comfort-food casserole!

side view of dinner plate containing taco casserole with sour cream on top, fork on the side, another dinner plate, tomatoes, and black slow cooker in background

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What’s To Love About This Recipe

Slow cooker taco casserole is a true dump-and-go recipe made with pantry staples and minimal prep. The ingredients are easy to keep on hand, and you can customize with what you already have!
This might just be the easiest Mexican-inspired casserole you’ll make right in the slow cooker! No precooking ingredients or complicated prep – you can truly assemble in one bowl and start the slow cooker.
The flavors are family-friendly, with a hint of spicy heat from fire-roasted tomatoes or your choice of enchilada sauce, but you can also customize and adjust the spice level.
Enjoy using up tortilla chips combined with protein, fresh veggies, and plenty of melted cheese. This meal will become a regular due to its convenience, balanced ingredients, and super yummy flavors!
Need a vegetarian meal option? This is a hearty, filling choice with plenty of ingredient variety.
This casserole is an effortless choice for weeknights, potlucks, and casual gatherings. It’s the perfect solution for a taco-themed dinner but in a comforting casserole version.

Ingredients Needed

Tortilla chips – Use about half a bag of tortilla chips and gently crush them into smaller pieces to form the base of the casserole. Chips work great in this recipe because they add structure while also soaking up flavor. This is a great use of leftover chips or the smaller pieces at the end of a bag!
Black beans – Add a can of drained and rinsed black beans for protein, fiber, and heartiness in the casserole.
Fire-roasted diced tomatoes – Also drain a can of fire-roasted tomatoes to add a smoky and slightly spicy flavor to the casserole. Let the tomatoes drain thoroughly to prevent extra liquid which could create a watery texture.
Jalapeño – Seed and finely dice a jalapeño pepper to add a spicy kick and fresh flavor.
Red bell pepper – Red peppers are slightly sweet and add a nice texture and color balance. Seed and dice the pepper before adding to the mix.
Frozen corn – Frozen corn cooks well in the slow cooker and won’t become too mushy. The sweetness is a great balance to the spicier flavors.
Enchilada sauce – A can of enchilada sauce will provide moisture and seasoning without extra seasoning packets. Choose your favorite brand and look for a high-quality variety (canned or jarred) for the best results.
Cream cheese – This adds rich creaminess and helps bind the casserole ingredients together. Start out with softened cream cheese in order to thoroughly mix everything before cooking.
Cilantro – Add extra flavor with fresh chopped cilantro (my preferred choice!) or dried cilantro.
Shredded cheese – Combine shredded cheese with the other ingredients to melt together, and reserve some to melt on top for a classic casserole finish. Shredding your own cheese fresh from the block will melt better, but bagged preshredded cheese also works, if needed.

ingredients to include bowls of tortilla chips, black beans, shredded cheese, diced tomatoes, frozen corn, enchilada sauce, cream cheese, red bell pepper, jalapeno pepper, cilantro

How To Make Slow Cooker Taco Casserole

Spray the slow cooker with nonstick spray.
Mix all ingredients in a separate bowl, holding back 1 cup of shredded cheese.

large glass bowl of all ingredients mixed together

Place the mixture in the slow cooker and top with the remaining shredded cheese.

overhead view of black slow cooker containing all mixed ingredients

overhead view of black slow cooker with all ingredients and extra cheese on top

Cover and cook on high for 2-3 hours or low for 4-5 hours.

overhead view of slow cooked taco casserole

Pro Tips

Preshredded cheese will work, but I recommend shredding your own cheese from a block for the best melting consistency.
Spraying the slow cooker helps to prevent the casserole from sticking.
Mix everything in a bowl first for even distribution.
If needed, stir gently after cooking and before serving.
An oval slow cooker will work just fine (what I used here), but you can also use a mini casserole slow cooker or a circular one. If you use a larger slow cooker, reduce the cooking time. Keep in mind that a less-full slow cooker will cook food faster.
To prepare ahead for the freezer, add all ingredients to a freezer bag, remove excess air, and store in the freezer for up to 3 months. Let it thaw in the fridge before cooking.

Recipe Substitutions and Variations

Want to up the protein? Add cooked ground beef, ground turkey, or shredded chicken to the mixture before adding it to the slow cooker. This would be a great way to use up leftovers!
If desired, swap black beans for pinto or kidney beans.
Use pepper Jack or a Mexican-blend cheese for a spicy kick or more savory flavors.
Diced onions, extra bell peppers, canned green chilies, or black olives are also tasty additions!
Use either regular or fire-roasted canned diced tomatoes. Regular tomatoes will provide a milder flavor, which can be more kid-friendly.
For a milder flavor, remove the jalapeño completely and use mild enchilada sauce.
For a spicier taco casserole, leave the seeds in the jalapeños or use canned jalapeños. You can also use a hot enchilada sauce or add chili powder or cayenne pepper.

closeup view of slow cooked taco casserole with large wooden spoon

Oven-Baked Taco Casserole

Preheat the oven to 375 ℉ and lightly grease an oven-safe casserole dish with nonstick spray.
In a large bowl, mix all ingredients together as directed above, reserving 1 cup of shredded cheese.
Spread the mixture into the casserole dish and sprinkle the remaining shredded cheese on top.
Cover loosely with foil and bake for 30-35 minutes, until the casserole is hot and bubbly.
Remove the foil and bake for an additional 10-15 minutes, or until the cheese on the top is fully melted.

What To Serve With Taco Casserole

Taco casserole makes a hearty, standalone meal that’s perfect for scooping into weeknight bowls. Keep it simple with just a few toppings, or add extra Mexican-themed sides such as Slow Cooker Refried Beans, or add a dollop of Spicy Slow Cooker Queso. Serve with extra tortilla chips for scooping or alongside a simple salad.

Customize with classic taco toppings such as:

sour cream
avocado
more fresh chopped cilantro
fresh salsa
guacamole
diced purple onions
sliced black olives

Load up your plate with hot, cheesy casserole and enjoy the meld of flavors at the end of the day!

overhead view of dinner plate on wooden cutting board containing taco casserole with sour cream on top, fork on the side, with bowls of cheese and sour cream on side

Storing and Reheating

How To Best Store Leftovers

Fridge

Leftover casserole stores well in a sealed container in the fridge for up to 2 days.

Freezer

Freezing is optional, but the texture may soften slightly after defrosting (due to the tortilla chips). If you freeze, portion into individual servings and freeze for up to 3 months.

How To Best Reheat Leftovers

Reheat leftover taco casserole in the microwave or oven until heated through, and the cheese is bubbly.