Keto Taco Casserole (Made with Low Carb Tortillas)

This keto taco casserole is a comforting dish made with layers of low carb tortillas, seasoned ground beef, and a generous amount of hand-shredded cheddar cheese. Baked in the oven, the result is a warm, savory casserole with a cheesy, melty top and a hearty filling that’s both satisfying, keto-friendly, and perfect for those crazy weeknight dinners.

Keto Taco Casserole

Picture this: It’s 6:00 pm on a weeknight. You’re so tired from the work day you can barely see straight. The kids are starting to get restless. The fridge has practically nothing to throw together into an acceptable family dinner. The easy choice would be to order pizza or Chinese. You open the freezer and instantly feel relieved. You have a fabulous keto taco casserole to heat up and placate your starving family. Problem solved!

This is a recipe to feed the masses, especially on those busy weeknights. It’s so popular in my family they tend to forget the rest of the meal prepped recipes exist, and it’s one of the easiest one to make! Maybe it’s because we all love Mexican food with a passion. I often double this recipe to keep up with the demand. The carb count is surprisingly low even though this casserole includes low carb tortillas. I honestly can’t tell the difference between this and a regular tortilla (neither can my kids).

Your whole family will enjoy this incredibly easy low carb casserole made with simple ingredients.

Ingredients in Keto Taco Casserole

Meat

• Ground Beef – The star of the show, ground beef lends a rich, meaty base that’s protein-packed and essential for building the hearty layers that define this casserole. Grass-fed beef is recommended on the keto diet for its high fat content, but any ground beef will do.

Layers

• Tomato Sauce – No sugar added tomato sauce (100% tomatoes if possible) is a low carb and healthy way to add moisture, tanginess, and depth of flavor, helping bind all the spices in the taco meat together. Its acidity balances the richness of the beef and cheese, while its smooth texture ensures the casserole is juicy and delicious.
• Low Carb Tortillas – Serving as the structural backbone, these tortillas add layers to the casserole without loading it with carbs. This can be a tricky ingredient to find because not all low carb tortillas are created equal. Try to find one that is low enough in carbs, but also low in total ingredients. Hero makes great low carb tortillas (and bread too). I used the keto friendly tortillas from Aldi’s in this recipe.
• Cheddar Cheese – Cheese is crucial for that gooey, melty top and adds a creamy texture throughout the casserole. Cheddar brings a sharpness that complements the spices, and shredding it yourself ensures it melts beautifully. Plus, it doesn’t add extra carbs from potato starch that bagged shredded cheese tends to have. Colby jack works well in this recipe too.

Spices

Note: These spices can be combined and saved for later as a homemade taco seasoning that’s keto-friendly!

• Chili Powder – This is where much of the casserole’s warmth and depth comes from. Chili powder adds a smoky flavor and a mild heat that’s essential for capturing the essence of taco seasoning.
• Cumin – Cumin offers an earthy, slightly spicy note that’s characteristic of Mexican cuisine.
• Garlic Powder – Garlic powder provides a robust, aromatic base that’s fundamental to the seasoning mix, giving the dish a familiar and inviting flavor profile.
• Paprika – Paprika lends a subtle sweetness and color, enhancing the visual appeal of the casserole and adding a layer of flavor that compliments the meat and cheese.
• Oregano – With its earthy, slightly bitter taste, oregano adds an herbal note that breaks through the richness of the beef and cheese. Use Mexican oregano for an authentic taste.
• Onion Powder – Onion powder contributes a sweet, savory depth without the moisture of fresh onions, ensuring the casserole’s texture remains consistent.
• Red Pepper Flakes – This adds just the right amount of heat, introducing a spicy kick that can be adjusted to taste. It’s the perfect finishing touch.

How to Make Keto Taco Casserole

Real quick! Don’t forget to hand shred your cheddar cheese as the very first step. Hand shredded means better melting and less carbs. Okay continue…

Make Taco Meat

1. Heat olive oil in a large skillet over high heat. Add ground beef.
2. Brown ground beef, breaking it up as you go. Drain if desired, but the extra fat is okay for the keto diet.
3. When there is no more pink, add tomato sauce and seasonings.
4. Simmer for 3-4 minutes. Set meat mixture aside.

Cut Tortillas

1. Cut low carb tortillas into thin strips using a pizza cutter or knife. Set aside.

Assemble Layers

1. Okay, this is hardest part to explain so I hope these pictures and the video below help! The layers go like this into a (23 x 33cm/9 x 13″) baking dish or casserole dish: Ground Beef…
2. Tortillas
3. Cheese
4. Ground Beef
5. Tortillas
6. Cheese
7. Ground Beef
8. Tortillas
9. Cheese. Phew! You got it. Now it’s ready for the oven. Bake about 30-40 minutes uncovered at 350 degrees F (177 degrees C). Don’t worry about the mess.

Here’s the best part…

Take out of the oven and serve immediately with your favorite toppings!

Toppings, storage, reheating, and substitution tips

This casserole makes a great base for your favorite taco toppings shredded lettuce, sour cream, hot sauce, sliced avocado, fresh cilantro, diced tomatoes, sliced black olives, green onions, crushed pork rinds, cream cheese, sliced jalapenos, and a squeeze of lime juice. This dish is very mild so it’s kid-friendly!

If you need a quick recipe for a potluck or get-together, make, bake, cover and freeze in a 13×9 foil pan. Then, put in your fridge in the night before to thaw and reheat it just before heading to the party. Right before serving, top with some fresh cilantro and lime juice for some extra flavor.

Store in the fridge for 3 to 4 days. Make sure it’s covered tightly with plastic wrap or aluminum foil, or transferred to an airtight container, to maintain its quality.

For longer storage, the casserole can be frozen for up to 2 to 3 months. To freeze, first let the casserole cool down completely after cooking. Then, wrap it securely in plastic wrap, followed by a layer of aluminum foil, or place it in a freezer-safe airtight container. This helps prevent freezer burn and preserves the flavors and textures as much as possible.

• Thawing: If you’ve frozen your casserole, it’s best to thaw it in the refrigerator overnight before you plan to reheat and serve it. This gradual thawing helps maintain its texture and taste.
• Reheating: To reheat, cover the casserole with aluminum foil to prevent it from drying out, and bake it in a preheated oven at 350°F (175°C) until it’s heated through. The time it takes will depend on the size and thickness of the casserole. If it was thawed in the fridge beforehand, it typically takes about 20-30 minutes. If you’re reheating it directly from frozen, it will take longer.

You can also substitute ground chicken or ground turkey for the ground beef. You can’t mess up this dish! I hope your entire family enjoys this dish as much as mine.

Check the printable recipe card below for my succinct steps, tips, and a video!

Have you tried meal prepping? I absolutely love it and it’s incredibly worth it. This is one of my go-to recipes and it’s freezer-friendly. Make sure you check out the guides and recipes below so you can have easy weeknights too:

• How to Meal Prep In A Few Steps
• Keto Meal Prep: The Ultimate Quick & Easy Guide
• 30 Keto Meal Prep Meals: How to Meal Prep a Month of Keto Dinners
• 10 Easy Keto Crockpot Freezer Dump Meals To Save Your Sanity
• 11 Best Keto Instant Pot Recipes for Easy Weeknight Dinners