Keto Cheeseburger Casserole

Name: Keto Cheeseburger Casserole
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Cuisine: American
Ingredients: 907 g extra lean ground beef; 2 tsp coarse kosher salt; ¼ tsp ground black pepper; 1 tbsp minced garlic; 60 ml avocado oil mayonnaise; 60 ml unsweetened ketchup; 1 tbsp mustard; 1 medium onion, finely chopped; 170 g shredded sharp cheddar cheese, divided; 2 tbsp olive oil; olive oil spray

Author: Lora

Published: November 2, 2025

Print Recipe

Introduction to Keto Cheeseburger Casserole

Hey there, busy moms and professionals! If you’re anything like me, there are days when dinner feels like a tremendous task. Enter the Keto Cheeseburger Casserole, your new best friend in the kitchen! This dish is not only simple to whip up, but it’s also packed with the comforting flavors we love. The blend of lean beef, melty cheese, and zesty seasonings makes it a delightful low-carb option. Perfect for impressing your loved ones or just treating yourself after a hectic day, this casserole is bound to become a weeknight staple in your home!

Why You’ll Love This Keto Cheeseburger Casserole

This Keto Cheeseburger Casserole is a dream come true for busy nights. It comes together in just 35 minutes, so you can spend less time cooking and more time enjoying. Each bite delivers a burst of savory goodness that appeals to even the pickiest eaters. Plus, it’s a low-carb delight, making it easier to stick to your health goals while satisfying those cheeseburger cravings. What’s not to love?

Ingredients for Keto Cheeseburger Casserole

Gathering the right ingredients is key to making a delicious Keto Cheeseburger Casserole. Here’s what you’ll need:

Extra lean ground beef: This is the star of the dish, providing protein without excessive calories.
Coarse kosher salt: Enhances flavor, but be sure to adjust it to your taste preference.
Ground black pepper: Just a pinch adds a nice kick without overpowering the dish.
Minced garlic: Fresh garlic brings a lovely aroma and depth to the mix.
Avocado oil mayonnaise: A creamy base that’s rich in healthy fats, perfect for a keto lifestyle.
Unsweetened ketchup: Look for a low-sugar option to keep the carb count down.
Mustard: Adds tanginess that complements the beef beautifully.
Onion: Finely chopped onion adds sweetness and moisture, helping everything meld together.
Shredded sharp cheddar cheese: This melty goodness enhances the cheeseburger flavor, and who doesn’t love cheese?
Olive oil: Used for cooking the meat and onions, it’s a healthier fat option.
Olive oil spray: A convenient way to lightly coat your baking dish for easy cleanup.

Feel free to customize your casserole! You can toss in your favorite low-carb veggies or experiment with different cheeses for added flavor. If you’re curious about exact measurements, you’ll find them listed at the bottom of the article, ready for printing!

How to Make Keto Cheeseburger Casserole

Now it’s time to get cooking! Making this Keto Cheeseburger Casserole is a breeze, and I’ll guide you through each step. Just follow along, and soon you’ll have a mouthwatering meal ready for the family!

Step 1: Preheat Your Oven and Prepare the Baking Dish

First, always preheat your oven. I can’t stress this enough! Preheating ensures your casserole cooks evenly from the start.

Set your oven to 204°C (400°F). While it warms up, lightly coat a 1.9 L baking dish with olive oil spray. This keeps the casserole from sticking and makes cleanup a cinch.

Step 2: Cook the Beef and Onions

Next up, let’s sauté those onions and brown the ground beef. In a large skillet, heat up some olive oil over medium-high heat for about two minutes.

Add in your finely chopped onions and extra lean ground beef. It’s crucial to break up the beef as it cooks. Do this with a spatula, so everything browns evenly. Cook until the onions are tender, about five minutes. If there’s excess liquid, drain it out before moving on!

Step 3: Season the Mixture

This is where the magic happens! Once your beef and onions are cooked, it’s time to season. Off the heat, sprinkle in kosher salt and ground black pepper, along with minced garlic.

Stir it all together and let those flavors mingle for a few minutes. The aroma alone will have your family flocking to the kitchen!

Step 4: Mix in the Sauces and Cheese

Now, let’s add creaminess and flavor! Stir in the unsweetened ketchup, avocado oil mayonnaise, and mustard. Mix until everything is well combined. Then, fold in one cup of shredded sharp cheddar cheese. Trust me; it makes this dish rich and delightful.

Step 5: Transfer and Bake

Once your mixture is ready, transfer it evenly into the prepared baking dish. Sprinkle the remaining cheddar cheese over the top, making it look inviting.

Pop it into your preheated oven and bake for about 15 minutes. Keep an eye on it; the cheese should be nice and melty!

Step 6: Broil for the Perfect Cheese Finish

If your baking dish is broiler-safe, let’s take it a step further! After the casserole is baked, place it under the broiler about 15 cm (six inches) from the heating element.

Broil for 1–2 minutes. Keep watching closely until the cheese is golden-brown and bubbly. This will create a beautifully crisp top!

Tips for Success

Use a non-stick skillet for easy cooking and cleanup.
Don’t rush the browning; it adds flavor!
Adjust seasonings to suit your family’s tastes.
Let the casserole rest for a few minutes before serving; it helps the layers set.
Make it ahead! Store leftovers in the fridge for quick reheating.

Equipment Needed

Large skillet: This is essential for browning beef and onions. A non-stick option works great.
Baking dish: A 1.9 L dish is ideal, but any oven-safe casserole dish will do.
Spatula: Perfect for breaking up the beef and mixing ingredients.
Measuring cups: Handy for precise ingredient additions, especially for cheese and sauces.

Variations of Keto Cheeseburger Casserole

Veggie Boost: Incorporate low-carb veggies like spinach, zucchini, or bell peppers for added nutrition and flavor.
Different Cheeses: Switch it up with mozzarella for a milder taste or pepper jack for a spicy kick!
Herb Infusion: Add fresh herbs like parsley or basil to elevate the dish and add a pop of color.
Spicy Version: Mix in jalapeños or a dash of hot sauce for a bit of heat if you like it spicy!
Cauliflower Base: For a true low-carb twist, substitute half the beef with cooked cauliflower rice for added texture.

Serving Suggestions for Keto Cheeseburger Casserole

Fresh Salad: Pair the casserole with a crisp garden salad drizzled with a tangy vinaigrette.
Low-Carb Bread: Serve with almond flour biscuits or cloud bread for a complete meal experience.
Refreshing Drink: Enjoy with sparkling water flavored with lemon or lime to cleanse your palate.
Garnish: Top with sliced green onions or fresh parsley for an added burst of flavor and color.

FAQs about Keto Cheeseburger Casserole

Got questions about this delightful Keto Cheeseburger Casserole? I’ve got answers! Here are some frequently asked questions that might pop up while you’re cooking.

Can I make this casserole ahead of time? Absolutely! You can prep the casserole a day in advance. Just cover and store it in the fridge. When you’re ready, bake it from cold, adding a few extra minutes to the cooking time.

What can I use instead of ground beef? If you’re looking for alternatives, ground turkey or chicken work great! Just keep an eye on the cooking time as leaner meats may cook faster.

Is this dish suitable for meal prep? Yes! This Keto Cheeseburger Casserole reheats beautifully! Portion it out, and you’ll have delicious lunches ready for the week.

How can I make this casserole spicier? If you love a little heat, mix in diced jalapeños or add a few dashes of hot sauce. You could also opt for pepper jack cheese to crank up the spice level!

Can I freeze leftovers? Definitely! Portion the leftovers into freezer-safe containers. Thaw in the fridge overnight before reheating for best results. Enjoy even on your busiest days!

Final Thoughts

Making this Keto Cheeseburger Casserole brings joy to a hectic kitchen. The rich flavors, cheesy goodness, and comforting aroma make it a delightful experience for both cooking and sharing with loved ones. Each bite feels like a warm hug, perfect for cozy evenings or gatherings. Whether you’re a busy mom trying to whip up something quick or just craving a comforting meal, this casserole hits the spot. Plus, knowing it fits into your low-carb lifestyle adds to the satisfaction. Trust me; give it a try, and watch it become a cherished favorite in your home!