If you’re craving all the flavors of a juicy cheeseburger without the bun, this Keto Cheeseburger Casserole is about to become your new favorite comfort meal. 🍔✨
It’s hearty, cheesy, and satisfying—everything you love about a classic burger baked into a simple, low-carb casserole that’s ready in just 30 minutes. Perfect for busy weeknights, meal prep, or when you just want something comforting and effortless.
Why You’ll Love This Recipe
✅ Easy and quick – Dinner’s ready in 30 minutes flat.
✅ Low-carb and keto-friendly – All the flavor, none of the bun.
✅ Family-approved – Even the kids will love it!
✅ Customizable – Mix in your favorite low-carb veggies or spices.
This casserole is the definition of easy comfort food—simple ingredients, big flavor, and minimal cleanup.
Ingredients You’ll Need
Here’s what you’ll need to make this cheesy keto casserole (see the recipe card for exact measurements):
- Olive oil – For sautéing and greasing your baking dish.
- Ground beef – Use 85–93% lean. Extra-lean works perfectly here since we drain any excess fat.
- Onion and garlic – Freshly chopped for the best flavor.
- Salt and black pepper – To season the beef.
- Mayonnaise – Adds creamy richness (try sriracha mayo for a spicy twist).
- Unsweetened ketchup – Keeps the recipe keto-friendly while adding tangy flavor.
- Mustard – Yellow or Dijon both work great.
- Shredded cheddar cheese – Sharp or extra-sharp cheddar melts beautifully and adds that classic cheeseburger taste.
Optional Add-Ins & Variations
This recipe is wonderfully flexible—customize it to suit your taste!
- Add bacon 🥓 – Cooked and crumbled bacon takes this to the next level.
- Mix in cauliflower rice – Add 1–2 cups for extra bulk and veggies.
- Try spinach or kale – Stir in a handful of fresh greens at the end of cooking.
- Spice it up – Add smoked paprika, chili powder, or sliced jalapeños for heat.
- Swap proteins – Use ground chicken or turkey (dark meat preferred for moisture).
How to Make Keto Cheeseburger Casserole
- Preheat the Oven
Preheat to 400°F (200°C). Grease a 2-quart baking dish with olive oil spray. - Cook the Beef and Onions
Heat olive oil in a large skillet over medium-high heat. Add ground beef and chopped onion. Cook for about 5 minutes, stirring to break up the beef, until browned and soft. - Add Seasonings and Condiments
Drain excess fat. Stir in garlic, salt, and black pepper. Turn off the heat and mix in mayonnaise, unsweetened ketchup, mustard, and 1 cup of shredded cheddar. - Assemble the Casserole
Transfer the mixture to the greased baking dish. Sprinkle the remaining ½ cup of cheese on top. - Bake
Bake for 15 minutes, or until the cheese is melted and bubbly.
(Optional: For a golden top, broil for 1–2 minutes, keeping a close eye on it.) - Serve and Enjoy
Serve warm with a side salad or your favorite roasted veggies for a balanced, low-carb meal.
What to Serve With Cheeseburger Casserole
Keep it light and simple with sides like:
- Steamed broccoli, green beans, or asparagus
- A fresh arugula salad with olive oil and lemon
- Roasted mini peppers or cabbage
- Classic coleslaw for crunch
Storage Tips
- Refrigerate: Store leftovers in an airtight container for up to 4 days.
- Freeze: Freeze portions for up to 3 months. Thaw overnight before reheating.
- Reheat: Microwave gently at 50% power or warm in the oven until heated through.
Recipe FAQs
Can I add vegetables?
Yes! Cauliflower rice, spinach, or zucchini blend in perfectly.
Can I use another type of meat?
Ground chicken or turkey works well—just use dark meat for better flavor and texture.
Can I make this ahead?
Absolutely. Assemble the casserole, cover, and refrigerate for up to 24 hours before baking.
Why use extra-lean beef?
It keeps the dish rich without being greasy since any fat is drained before baking.
Nutrition (Per Serving)
Calories: 458 | Carbs: 4g | Protein: 38g | Fat: 31g | Sodium: 771mg
Final Thoughts
This Keto Cheeseburger Casserole is comfort food made simple—gooey, savory, and absolutely satisfying. Whether you’re eating low-carb or just want a family-friendly meal that’s quick and delicious, this dish checks all the boxes.
Serve it hot, dig in, and enjoy all the flavors of a cheeseburger… without the bun