Hey there! Ever have one of those nights?
You get home from work. You’re tired. You’re hungry. And all you want is some good, old-fashioned comfort food. For me, tacos are usually the answer. I love them. But let’s be honest, on a busy weeknight, getting out all the shells, toppings, and everything else can feel like a chore.
That’s where this recipe comes in. It’s my secret weapon.
Welcome to my kitchen! Today, we’re making the ultimate Cheesy Keto Taco Casserole. This isn’t just another dinner idea. It’s all the taco flavor you crave, packed into one simple, cheesy, scoopable dish that happens to be super low-carb.
Think of it like all the best parts of a taco… deconstructed and baked into one amazing casserole. We’re taking that classic American comfort dish and giving it a spicy, Mexican-inspired twist.
The best part? What’s not in it. There are no carb-heavy fillers like cauliflower or beans. Nope. We’re building this on a rich, savory taco meat base. And I’ve got a little trick that holds it all together with a creamy cheese sauce that makes every single bite incredible.
This is the easy Keto Taco Casserole you’ll find yourself making over and over again. I know I do.

The Quick Rundown: All You Need to Know
Here’s the game plan before we get started. This dish is designed to be as simple as it is delicious.
- How long will this take? You’ll be eating in under 30 minutes. Seriously. Just 10 minutes of prep and about 15 minutes in the oven. It’s a true weeknight hero.
- How many people does it feed? This recipe makes a big batch, enough for 8 servings. If you’re cooking for a smaller group, just cut the ingredients in half. Easy. Having a party? Double it! It works perfectly.
- How hard is it? Beginner level. I promise. If you can brown ground beef in a pan, you can absolutely nail this recipe.
- What gear do I need? Nothing fancy. You just need a skillet, a baking dish (a 9×13 inch one is perfect), and your measuring cups and spoons.
- Can I make it ahead? Absolutely! This casserole is a meal prepper’s dream. You can put it all together and stick it in the fridge to bake later. Or, cook it completely and portion out your lunches for the week.
Scaling Your Casserole
Need to adjust the recipe? No problem. Here’s a handy chart.
Servings | Ground Beef | Keto Taco Seasoning | Eggs | Shredded Cheese | Heavy Cream |
4 | 1 lb | 2 tbsp | 1 medium | ¾ cup | ¼ cup |
8 (This Recipe) | 2 lbs | 4 tbsp | 2 medium | 1½ cups | ½ cup |
16 | 4 lbs | 8 tbsp (½ cup) | 4 medium | 3 cups | 1 cup |

The All-Star Ingredients
Great food starts with great ingredients. It’s as simple as that. Let’s walk through what we’re using and why.
For the Savory Taco Meat:
First, you’ll need 2 pounds of ground beef. I personally use an 80/20 blend. Why? The extra fat adds a ton of flavor, which is fantastic for a keto diet. But hey, feel free to use leaner beef or even ground turkey if that’s what you prefer.
To build that flavor, we’ll add one diced onion and one diced bell pepper. Any color works, but I love the sweetness you get from a red or yellow one. Toss in two cloves of minced garlic for that amazing aroma.
The spice comes from four tablespoons of keto taco seasoning. You can use a store-bought sugar-free brand or whip up your own. Finally, two tablespoons of tomato paste add a deep, rich flavor that you just can’t get from seasoning powder alone.
For the Cheesy “Magic” Binder:
This is what makes the recipe so special. Instead of just sprinkling cheese on top, we create a creamy base that bakes right into the meat.
For this, you’ll need two medium eggs, half a cup of heavy whipping cream, and one and a half cups of shredded cheese. I like a sharp cheddar or a Mexican blend for a nice kick.
A little tip I learned the hard way: grate your own cheese. The pre-shredded stuff you buy in a bag has anti-caking starches that prevent it from melting into that gooey perfection we’re looking for. It only takes an extra minute, and it makes a huge difference.
To top it all off, we’ll use one sliced jalapeno. If you’re not big on spicy food, just leave it off!
Let’s Get Cooking: Your Step-by-Step Guide
Alright, let’s do this. Go ahead and preheat your oven to 350°F (180°C).
Step 1: Build that Flavor Base
Get your skillet on the stove over high heat. Add the diced onions, bell peppers, minced garlic, and the ground beef. You should hear an immediate sizzle. That’s the sound of flavor happening!
Use a spatula to break the beef apart as it cooks. You want it to be nicely browned with no pink left, and the veggies should be soft. Your kitchen should be smelling incredible right about now.
Pro tip: Don’t overcrowd the pan. If you need to, cook the beef in two separate batches. This helps it brown instead of just steaming. When it’s cooked, drain off any extra grease.

Step 2: Season and Assemble
Okay, the meat is perfectly browned. Now for the fun part.
Turn the heat down a bit and stir in your keto taco seasoning and the tomato paste. Keep stirring until every single piece of beef is coated in that rich, spicy goodness. You’ll see the mixture get thick and glossy.
This is the heart of your casserole. Pour this glorious mixture into your baking dish and spread it out into an even layer.

Step 3: The Creamy, Cheesy Topping
Time for our secret weapon. Grab a medium-sized bowl.
In it, whisk together the eggs and heavy cream until they’re smooth. Now, stir in half of your shredded cheese. This creamy mixture is going to seep down into the meat, holding it all together and keeping it super moist while it bakes.
Pour this concoction evenly over the beef in the dish. Then, sprinkle the rest of the cheese and the sliced jalapenos right over the top.
Step 4: Bake to Golden Perfection
Slide your casserole into the preheated oven, uncovered. Let it bake for about 15-17 minutes.
You’ll know it’s done when the cheese on top is completely melted, bubbly, and just starting to get golden brown around the edges.
Now for the hardest part. Once you take it out of the oven, you have to let it rest for 5 minutes. I know, it’s tough. But this is super important! It allows the casserole to set, making it much easier to cut and serve. Trust me on this.

Don’t Be Afraid to Mix It Up!
One of the best things about a casserole is that you can totally make it your own. This recipe is a great starting point, but feel free to play with it!
Here are a few ideas:
- Turn up the heat: Love spice? Me too. Mix in a can of diced green chiles with the meat or add a pinch of cayenne pepper to the taco seasoning. For a milder version, just skip the jalapenos.
- Pack in more veggies: Want to add some extra nutrients? Feel free to add more low-carb vegetables. Sliced mushrooms or diced zucchini would blend in wonderfully.
- Make it fancy: Having people over? Try using a blend of ground beef and chorizo for an extra smoky flavor. Top it with some crumbled cotija cheese and fresh cilantro after it bakes. So good!
- Dietary needs: This recipe is already gluten-free and keto! For a dairy-free version, you could experiment with dairy-free shredded cheese and full-fat coconut cream, but just a heads-up, the texture will be a bit different.

Time to Eat! (And What to Do with Leftovers)
The moment we’ve all been waiting for.
I love to serve this casserole in big squares, topped with a dollop of sour cream, some fresh pico de gallo, and a few slices of creamy avocado. It’s a full meal by itself, but it’s also great with a simple green salad.
Storing Leftovers: Leftovers are fantastic! In fact, they might even be better the next day because the flavors have more time to hang out and get to know each other. Store them in an airtight container in the fridge for up to 4 days.
Reheating: For the best texture, pop individual slices in the oven or a toaster oven at 350°F until they’re warmed through. The microwave works if you’re in a rush, but the oven keeps the topping from getting soggy.
Freezing: This casserole also freezes beautifully. Let it cool down completely, then slice it into portions before freezing. That way, you can just pull out what you need. Thaw it in the fridge overnight and reheat.
And that’s it! A truly delicious, incredibly easy taco casserole that is sure to become a new favorite. Enjoy every cheesy, flavorful bite!
PrintKeto Taco Casserole
Craving tacos on a busy night? This easy Keto Taco Casserole packs all that spicy, cheesy flavor into one simple dish. It’s pure low-carb comfort food, ready in under 30 minutes!
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Total Time: 25 minutes
- Yield: 8 servings 1x
- Category: Main Course, Dinner, Keto, Low Carb
- Cuisine: Mexican-Inspired, American
Ingredients
For the Taco Meat:
- 2 lbs ground beef (80/20 blend is great for flavor)
- 1 onion, diced
- 1 bell pepper, any color, diced
- 2 cloves garlic, minced
- 4 tbsp keto-friendly taco seasoning
- 2 tbsp tomato paste
For the Cheesy Topping:
- 2 medium eggs
- ½ cup heavy whipping cream
- 1 ½ cups shredded cheese (cheddar or a Mexican blend works best)
- 1 jalapeno, sliced (optional, for a little kick)
Instructions
- Prep Oven & Pan: First, get your oven preheating to 350°F (180°C).
- Brown the Beef & Veggies: In a large skillet over high heat, cook the ground beef, onion, bell pepper, and garlic. Break up the meat as it cooks until it’s browned and the veggies are soft. Drain off any extra grease.
- Add the Flavor: Stir the taco seasoning and tomato paste into the meat mixture. Keep stirring until everything is coated and smells amazing.
- Assemble the Base: Spread the seasoned meat mixture evenly into a 9×13 inch casserole or baking dish.
- Mix the Cheesy Binder: In a separate bowl, whisk the eggs and heavy cream together. Then, stir in half of the shredded cheese (about ¾ cup).
- Combine & Top: Pour the creamy egg mixture all over the meat in the dish. Sprinkle the rest of the shredded cheese and the sliced jalapenos on top.
- Bake to Perfection: Bake for 15-17 minutes. You’ll know it’s done when the cheese is melted, bubbly, and just starting to turn golden. Let it rest for 5 minutes before you dig in—this helps it set up perfectly!
Notes
- Serving Ideas: This casserole is fantastic with a big dollop of sour cream, fresh salsa or pico de gallo, and some sliced avocado. It’s a complete meal!
- Tip for Melty Cheese: For the absolute best, gooiest cheese, grate your own from a block. The pre-shredded bags have starches that can make the cheese less creamy.
- Storage & Reheating: Got leftovers? Store them in an airtight container in the fridge for up to 4 days. For the best texture, reheat individual slices in the oven or a toaster oven at 350°F until warmed through.