Keto Taco Casserole

This Keto Taco Casserole recipe keeps Taco Tuesday healthy and delicious. Made with roasted cauliflower, seasoned beef, and plenty of cheese, this low carb taco casserole is a hit with the whole family.

There are two things in this world that I love most of all.

Tacos and casseroles.

I could literally eat Mexican food every night of the week and I’m pretty sure I’d never get tired of it.

Same goes for casseroles!

I’m a Midwestern girl and casseroles are in our blood. It’s how we do.

I’ve churned out a bazillion ground beef casseroles in my day (like my Big Mac Casserole) because 1) I always have ground beef in my fridge and 2) did I mention my love of casseroles?

I figured it was high time we got around to making some low carb ground beef casseroles, though. I mean. Casseroles don’t have to be full of grains and starch. They can be full of keto goodies, too!

Expert Tips:

Cauliflower: Use fresh cauliflower for the best taste and texture. Frozen will work, but it will be more watery.

Meat: You can use any type of ground meat you like. Shredded chicken would work as well!

Cheese: Feel free to add more or less cheese to suit your tastes. You can use other varieties as well. Pepperjack is a great option!

Toppings: We like to serve this with an array of toppings, like diced tomatoes, guacamole, and sour cream.

Ingredient Notes:

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Cauliflower – I’m starting with a fresh head of cauliflower for this recipe and chopping it into florets. You can also just buy pre-chopped florets from the store but I’d stick to fresh if you can. Frozen cauliflower will work but it won’t be as good.

Taco Meat – I’m using a seasoned ground beef mixture for the taco meat in this casserole but you could also switch this up with other meat like ground chicken, ground turkey, or ground pork.

Homemade Taco Seasoning – This simple taco seasoning blend is made with paprika, cumin, chili powder, salt, garlic powder, and onion powder. My keto taco seasoning recipe would also work here though it is a bit spicier!

Ro-Tel – These canned diced tomatoes and green chiles are a simple way to spice this taco casserole up! The green chiles do add some heat but not too much. You can use a milder or spicier variety if you like!

Cheese – Freshly grated cheddar cheese and grated Monterey Jack cheese will lead to the best results here. A pre-shredded cheese blend is okay to use but it won’t be as good or as melty as freshly grated!

Taco Casserole Serving Suggestions:

When serving keto taco casserole recipe we like to sprinkle on some fresh cilantro and top it with my keto guacamole and a big drizzle of Cholula hot sauce! This cilantro lime cauliflower rice would make a good side.

Some other good toppings include sour cream, fresh avocado slices, keto salsa, black olives, green onions, and just about any taco topping you can think of.

You could also spice it up a bit more by mixing some cayenne pepper in with the seasoning, or adding some red pepper flakes.

We’re using cheddar and Monterey Jack cheeses but you can use any variety you like. Colby Jack cheese and Pepper Jack cheese are good choices too, or just use a Mexican cheese blend.

FAQ’s:

• Keto Breakfast Casserole
• Bacon Cheeseburger Casserole
• Chicken Broccoli Casserole
• Philly Cheesesteak Casserole
• Loaded Cauliflower Bake
• Spinach Casserole
• Spaghetti Squash Casserole

Or check out my mozzarella stuffed meatballs for another tasty ground beef recipe!

This recipe was originally published in 2018. It was updated with new photos in 2024. Original photo below: