When the craving for a big, juicy cheeseburger hits but we’re staying low-carb, this casserole is our go-to fix. It’s everything we love about a classic bacon cheeseburger, but reimagined into a cozy, bake-and-serve dinner that satisfies without the bun.
This casserole is layered with savory seasoned ground beef, rich cheddar cheese, and crispy bits of bacon—and the real magic happens when we pour over a creamy mustard-spiked egg custard that bakes into the meat like a soft, fluffy binder. It gives the whole dish a golden, slightly tangy finish that pulls all the burger flavors together.
Perfect for busy weeknights or weekend meal prep, this one always earns a spot in our dinner rotation. It’s easy, satisfying, and guaranteed to win over both keto folks and carb lovers alike.
Keto Bacon Cheeseburger Casserole
This layered casserole hits all the cheeseburger cravings—juicy ground beef, crispy bacon, melted cheddar, and a creamy mustard egg custard to tie it all together. It’s indulgent, hearty, and perfectly keto-friendly comfort food.
Ingredients
For the Casserole Base:
For the Custard:
Optional Garnishes:
Instructions
Prepare the Casserole Base:
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Preheat the oven to 375°F and grease a baking dish (8x8 or similar).
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In a skillet, cook the ground beef and diced onion over medium heat until the meat is browned and the onions are soft.
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Season with garlic powder, salt, and pepper. Drain excess grease if needed.
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Stir in the chopped cooked bacon and half of the shredded cheese.
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Transfer the beef mixture into the prepared baking dish and spread evenly.
Mix the Custard:
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In a bowl, whisk together the eggs, heavy cream, mustard, and tomato paste (if using).
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Season with a pinch of salt and pepper.
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Pour the custard over the beef mixture in the dish.
Top & Bake:
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Sprinkle the remaining cheese on top of the casserole.
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Bake for 20–25 minutes, or until the egg custard is set and the top is golden and bubbling.
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Let rest for 5 minutes before serving.
Nutrition Facts
Servings: 6 ServingCalories:390kcalTotal Fat:32gSaturated Fat: 13gTotal Carbohydrate:3gDietary Fiber: 0gSugars: 1gProtein:24g
Note
Substitutions & Variations
- Dairy-Free: Use a dairy-free cheese alternative and coconut cream instead of heavy cream.
- Add Veggies: Stir in some diced mushrooms or spinach with the beef for more nutrients.
- Spicy Kick: Add hot sauce or diced jalapeños to the beef or custard mixture.
- Burger Bar Style: Serve with chopped pickles, shredded lettuce, and tomato on the side.
