I love keto ground beef casserole recipes like this one, because they are easy to make and the whole meal is in one dish. (Actually, that’s most keto casserole recipes!) And if you take advantage of keto meal planning like I do, this Mexican ground beef casserole is excellent for prepping ahead or even freezing for later.
What’s In Keto Ground Beef Casserole?
There are all kinds of keto ground beef casserole recipes, but this one is packed with Mexican flavors. Mexican casserole recipes will vary on ingredients as well. This low carb Mexican casserole with ground beef is made with a veggie layer, meat layer, and cheese layer. Here are the ingredients found in this easy keto ground beef casserole:
Cauliflower rice – This isn’t just any cauliflower rice, it’s also flavored with diced tomatoes with green chiles.
TIP: This Mexican ground beef casserole is fairly spicy. For a milder version, replace the diced tomatoes with green chiles with plain diced tomatoes instead. Or serve with extra sour cream if you need to cool it down a bit.
Vegetable layer – Traditional fajita veggies like peppers and onions make up this layer. Taco meat – Ground beef is simply seasoned with taco seasoning. You could also use Mexican chorizo for this recipe. Cheese – We’ve used a Mexican cheese blend, but cheddar is also awesome. Optional toppings – See below for ideas!
How To Make Keto Ground Beef Casserole
Making this dish is just a few easy steps. Here’s how to make a Mexican casserole that’s full of flavor and low on carbs:
Cook cauliflower rice. In a skillet, cook cauliflower rice with avocado oil and sea salt. Find full instructions for making cauliflower rice here.
Add diced tomatoes with green chilies. Drain the can first, then stir into the rice. Transfer the mixture to the bottom of a 9×13 casserole dish.
Cook bell peppers and onions. Wipe out the skillet, heat more oil, and saute bell peppers and onions, until soft and starting to brown. Season with salt and pepper.
… And arrange over the casserole dish:
Add sour cream. Spread it over the vegetables and smooth with a spatula.
Cook ground beef. Add the ground beef to the pan and increase heat to medium-high. Break apart with spatula, until browned. Add the water and taco seasoning. Bring to a boil, then simmer until it thickens.
… And spread beef over the pan:
Top with cheese. I used a Mexican blend, but cheddar works, too!
Bake. Since all the layers are already cooked, this goes quickly – just until casserole is hot and cheese is melted.
To serve, simply use a turner to cut the casserole into even pieces (I recommend 3 by 3, so 9 total), then scoop from underneath so that you get all the layers.
Serving Suggestions
The awesome thing about this dish is that it’s a complete meal! You don’t need anything on the side. But, you do need toppings. All the toppings. 😉 Here are the basics to add:
Tomatoes Jalapenos Avocados Sour cream Fresh cilantro
Or you could add a few prepared toppings, too:
Guacamole Fresh tomato salsa Classic salsa Avocado salsa verde
Let everyone top their own with their favorite taco toppings, or if your family likes the same thing, you can add them right onto the casserole, too! You could even serve these with a side of almond flour tortillas.
Storage Instructions
Can you make it ahead? Yes, you can make this keto Mexican casserole ahead. It’s one of the best things about Mexican dinner casseroles – they reheat so nicely. To store: Store it in the refrigerator for 3-4 days. To freeze: You can also freeze this keto Mexican casserole for 3-4 months. It’s a great meal to prep ahead or double to freeze for later. To reheat: Warm in the microwave or a 350 degree F oven, until hot.
More Keto Casserole Recipes
If you like this keto friendly casserole with ground beef, you might also like these:
Broccoli Casserole Recipe – Just 5 ingredients and loads of flavor. Philly Cheesesteak Casserole – Just 30 minutes to prep this creamy, cheesy casserole that has all of the Philly cheesesteak flavors you love. Spaghetti Squash Casserole – Chicken, spaghetti squash, buffalo sauce and blue cheese dressing. Just 6 ingredients to make this healthy, comforting meal.
Skillet – This one is the perfect size, doesn’t stick, and doesn’t scratch easily. Meat Chopper – Use this convenient meat chopper whenever you need to brown ground meat. 9×13 Glass Casserole Dish – This baking dish comes with a lid, and can even go from fridge or freezer to oven if you want to prep this keto Mexican casserole ahead.
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