Keto Cheeseburger Casserole
This Keto Cheeseburger Casserole is the perfect dish for those craving a delicious, filling meal while sticking to a low-carb lifestyle. Ideal for family dinners or meal prep, it combines the classic flavors of a cheeseburger in a creamy, cheesy casserole form. Quick to make and satisfying, this recipe will quickly become a favorite for both keto enthusiasts and anyone looking for comfort food without the carbs.
Why You’ll Love This Recipe
- Quick and Easy: With just 30 minutes from start to finish, you can enjoy a hearty meal in no time.
- Flavor-Packed: The combination of ground beef, cheese, and seasonings creates a rich flavor that satisfies your taste buds.
- Versatile Meal Prep: Perfect for leftovers, this casserole is easy to reheat and great for lunches throughout the week.
- Low-Carb Goodness: Enjoy all the flavors of a cheeseburger without the extra carbs—great for your keto diet!
- Family-Friendly: Kids and adults alike will love this comforting dish, making it ideal for family gatherings.
Tools and Preparation
To whip up this Keto Cheeseburger Casserole, you’ll need some essential kitchen tools.
Essential Tools and Equipment
- Large skillet
- 2-quart baking dish
- Olive oil spray
- Mixing spoon
- Cutting board
Importance of Each Tool
- Large skillet: This allows you to cook the beef and onions evenly, ensuring great flavor throughout.
- 2-quart baking dish: Perfect size for baking your casserole while allowing it to heat evenly.
- Olive oil spray: Helps prevent sticking in your baking dish while keeping the recipe healthy.

Ingredients
This simple keto cheeseburger casserole is filling and hearty and makes a superb low-carb option to your cheeseburger.
For the Casserole
- 2 lbs extra lean ground beef
- 2 tsp coarse kosher salt (not fine salt)
- ¼ cup avocado oil mayonnaise
- ¼ tsp black pepper
- 1 tbsp minced garlic
- olive oil spray for the baking dish
- ¼ cup unsweetened ketchup
- 1 medium onion (finely chopped (about 6 oz))
- 1 ½ cup shredded sharp cheddar (divided (about 6 oz))
- 2 tbsp olive oil
- 1 tbsp mustard
How to Make Keto Cheeseburger Casserole
Step 1: Preheat the Oven
Preheat your oven to 400°F. While it heats up, spray a 2-quart baking dish with olive oil to prevent sticking.
Step 2: Cook Beef and Onions
Heat olive oil in a large skillet over medium-high heat for about two minutes. Add chopped onions along with the ground beef.
Step 3: Brown the Meat
Cook the mixture while stirring frequently to break up the beef until browned and onions are tender—around five minutes. Drain any excess fluids from the skillet before returning it to heat.
Step 4: Seasoning
Stir in black pepper, minced garlic, and kosher salt. Continue cooking while stirring for a few more minutes until well mixed.
Step 5: Combine Remaining Ingredients
Turn off heat. Stir in unsweetened ketchup, avocado oil mayonnaise, mustard, and one cup of shredded cheddar cheese until combined well.
Step 6: Transfer to Baking Dish
Transfer this delicious mixture into your prepared baking dish. Sprinkle with remaining cheddar cheese on top.
Step 7: Bake
Place in the preheated oven and bake until cheese is melted and casserole is heated through—approximately 15 minutes.
Step 8: Broil (Optional)
If using a broiler-safe dish, you can broil six inches below the heating element until cheese is bubbly—about one to two minutes.
Enjoy your flavorful Keto Cheeseburger Casserole as part of your next family meal!
How to Serve Keto Cheeseburger Casserole
Serving your Keto Cheeseburger Casserole can elevate the meal experience. This dish is versatile and pairs well with various sides and toppings to enhance its flavors.
Top with Fresh Ingredients
- Chopped Green Onions – Add a sprinkle of fresh green onions for crunch and a pop of color.
- Sliced Avocado – Creamy avocado complements the casserole nicely, adding healthy fats.
- Diced Tomatoes – Fresh tomatoes bring a juicy, refreshing element to each bite.
Add a Side Salad
- Garden Salad – A simple garden salad with mixed greens and vinaigrette balances the richness of the casserole.
- Caesar Salad – A keto-friendly Caesar salad adds a classic twist that pairs well with the cheeseburger flavors.
Serve with Dipping Sauces
- Sugar-Free BBQ Sauce – For those who enjoy a sweet and smoky flavor, sugar-free BBQ sauce offers a tasty dip.
- Ranch Dressing – Creamy ranch dressing is a great complement for drizzling or dipping.
How to Perfect Keto Cheeseburger Casserole
To ensure your Keto Cheeseburger Casserole turns out perfectly every time, follow these helpful tips.
- Use Lean Ground Beef – Opt for extra lean ground beef to keep the dish low in fat while retaining flavor.
- Don’t Overcook the Beef – Aim for just browned beef; overcooking can make it dry.
- Experiment with Cheese Types – Feel free to mix different cheeses like mozzarella or pepper jack for varied flavors.
- Add Veggies – Incorporate chopped bell peppers or mushrooms for added nutrients and texture.
- Adjust Seasonings – Taste before serving and adjust salt and pepper according to preference.
- Store Properly – Keep leftovers in an airtight container in the fridge for up to 3 days.
Best Side Dishes for Keto Cheeseburger Casserole
Pairing your Keto Cheeseburger Casserole with complementary side dishes can enhance your meal’s overall flavor. Here are some excellent options:
- Garlic Mashed Cauliflower – A creamy, low-carb alternative to mashed potatoes that adds richness without the carbs.
- Zucchini Noodles – Light and refreshing, zucchini noodles serve as a great base if you want something more substantial alongside.
- Roasted Brussels Sprouts – Crispy roasted Brussels sprouts add earthiness and crunch, making them an ideal pairing.
- Coleslaw – A crunchy coleslaw made from cabbage and keto-friendly dressing adds freshness to balance the casserole’s richness.
- Stuffed Bell Peppers – Colorful bell peppers filled with cheese or vegetables take on a fun presentation while being nutritious.
- Cucumber Salad – A simple cucumber salad drizzled with olive oil and vinegar provides a refreshing contrast to the warm casserole.
Common Mistakes to Avoid
When making Keto Cheeseburger Casserole, certain mistakes can hinder your cooking experience. Here are some common pitfalls and how to avoid them:
- Skipping the Preheat: Always preheat your oven before baking. This ensures even cooking and proper melting of cheese.
- Not Draining Excess Liquid: Failing to drain the liquid from the beef and onions will make your casserole too watery. Be sure to drain before mixing in other ingredients.
- Using Fine Salt: Coarse kosher salt is essential for flavor balance. Fine salt can make the dish too salty. Stick with coarse for better results.
- Rushing the Cooking Process: Take your time when browning the beef and onions. This step adds depth of flavor that enhances the overall dish.
- Overlooking Cheese Quality: Using low-quality cheese can affect taste and texture. Opt for sharp cheddar for a rich flavor.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftover casserole in an airtight container.
- It will keep well for up to 3-4 days in the refrigerator.
Freezing Keto Cheeseburger Casserole
- Freeze in a well-sealed container or freezer bag.
- The casserole can be frozen for up to 2-3 months.
Reheating Keto Cheeseburger Casserole
- Oven: Preheat to 350°F and bake until heated through, about 15-20 minutes.
- Microwave: Heat on medium power in short intervals, stirring occasionally until warm.
- Stovetop: Reheat in a skillet over low heat, stirring frequently to prevent sticking.
Frequently Asked Questions
Here are some common questions about Keto Cheeseburger Casserole:
What is Keto Cheeseburger Casserole?
Keto Cheeseburger Casserole is a low-carb dish that mimics traditional cheeseburgers but is made with ground beef, cheese, and keto-friendly ingredients.
Can I customize my Keto Cheeseburger Casserole?
Absolutely! You can add vegetables like bell peppers or mushrooms, or swap out ground beef for turkey or chicken for a different flavor profile.
How do I ensure my casserole does not become soggy?
Make sure to drain any excess liquid after cooking the beef and onions. This helps maintain a nice texture.
Is this dish suitable for meal prep?
Yes! Keto Cheeseburger Casserole keeps well in the fridge or freezer, making it perfect for meal prep.
Final Thoughts
This Keto Cheeseburger Casserole is not only delicious but also versatile, allowing you to customize it to fit your taste. Its hearty nature makes it an excellent main course option that everyone will love. Give it a try, and feel free to experiment with different ingredients!
Keto Cheeseburger Casserole
Keto Cheeseburger Casserole is a mouthwatering dish that brings the classic flavors of cheeseburgers into a comforting, low-carb casserole. Perfect for busy weeknights or meal prepping, this recipe features ground beef, melty cheese, and simple seasonings, all baked to perfection in just 30 minutes. It’s an ideal choice for families looking to enjoy hearty meals without sacrificing their low-carb lifestyle. Garnish with fresh toppings like green onions or avocado for a delightful twist, and serve alongside your favorite keto-friendly sides. This dish is sure to become a staple in your home!
- Prep Time: 10 minutes
- Cook Time: 20 minutes
- Total Time: 30 minutes
- Yield: Serves approximately 8 people 1x
- Category: Main
- Method: Baking
- Cuisine: American
Ingredients
- 2 lbs extra lean ground beef
- 1 medium onion (finely chopped)
- ¼ cup avocado oil mayonnaise
- ¼ cup unsweetened ketchup
- 1 ½ cup shredded sharp cheddar cheese (divided)
- 2 tsp coarse kosher salt
- 1 tbsp minced garlic
- ¼ tsp black pepper
- 1 tbsp mustard
- Olive oil spray
Instructions
- Preheat your oven to 400°F and spray a 2-quart baking dish with olive oil.
- In a large skillet, heat olive oil over medium-high heat. Add chopped onions and ground beef; cook until browned and onions are tender (about 5 minutes). Drain excess liquid.
- Stir in black pepper, minced garlic, and kosher salt; cook for an additional few minutes.
- Remove from heat and mix in unsweetened ketchup, avocado oil mayonnaise, mustard, and one cup of shredded cheddar until well combined.
- Transfer the mixture to the prepared baking dish and sprinkle the remaining cheddar cheese on top.
- Bake for about 15 minutes or until cheese is melted and casserole is heated through.
- For a bubbly top, broil for one to two minutes if using a broiler-safe dish.
Nutrition
- Serving Size: 1 serving
- Calories: 380
- Sugar: 2g
- Sodium: 780mg
- Fat: 27g
- Saturated Fat: 10g
- Unsaturated Fat: 15g
- Trans Fat: 0g
- Carbohydrates: 6g
- Fiber: 1g
- Protein: 30g
- Cholesterol: 85mg