Welcome to your new favorite weeknight dinner! This Keto Ground Beef Casserole delivers ultimate comfort without the heavy carbohydrates. It combines perfectly browned crumbled ground beef with a luscious, creamy white sauce and tender, translucent sliced onions.
Everything is baked to bubbly perfection in a rectangular white ceramic casserole dish. The crown jewel is a thick layer of sharp orange cheddar cheese, broiled until slightly browned, crispy, and blistered at the edges.
Why You’ll Love This Recipe
- Perfect Textures: The combination of a rich, creamy white sauce and crispy, blistered browned cheese edges provides an incredible mouthfeel in every bite.
- Keto-Friendly Comfort: By utilizing heavy cream and cream cheese instead of flour, you get all the comfort of a traditional baked ground beef casserole while keeping the carb count incredibly low.
- One-Pan Simplicity: After a quick stovetop sear to achieve the perfect browned crumbled ground beef and translucent sliced onions, everything bakes together effortlessly.
- Visually Stunning: The contrast of the sharp orange cheddar and the vibrant chopped fresh green parsley garnish makes this dish look like it came straight from a gourmet kitchen.
Ingredients & Substitutions
Ground Beef: A robust 80/20 ground beef provides the perfect fat-to-protein ratio for keto diets. When browned and crumbled, it forms the hearty, savory foundation of the dish.
Yellow Onion: Sliced thinly and cooked until perfectly translucent, these add a gentle, natural sweetness. They balance the rich, heavy cream sauce without adding excessive carbohydrates.
Olive Oil: Used to lightly grease the pan and aid in searing the beef and onions. It helps unlock those deep, caramelized flavors on the bottom of the skillet before creating the sauce.
Cream Cheese: This is the secret to an incredibly thick, creamy white sauce that coats every single bite of beef. It melts down beautifully, acting as a stable, low-carb binder for the savory liquids.
Heavy Whipping Cream: Adding heavy cream creates the luxurious, velvety texture associated with classic comfort casseroles. It thins the cream cheese just enough to create a pourable, rich base.
Beef Broth: A splash of high-quality beef broth enhances the savory, meaty flavor profile. It prevents the thick white sauce from becoming too dense while baking in the oven.
Garlic Powder, Salt & Black Pepper: These foundational invisible ingredients are essential for proper culinary seasoning. They elevate the savory notes of the browned beef and cut through the richness of the dairy.
Sharp Orange Cheddar Cheese: A thick, bubbling layer of this cheese provides a sharp, tangy contrast to the mellow white sauce beneath. It is scientifically essential for achieving those slightly browned, crispy, blistered edges under the high heat of a broiler.
Fresh Green Parsley: Finely chopped and scattered evenly across the melted cheese, this garnish adds a vibrant pop of color. It also introduces a fresh, herbaceous note that brightens the entire heavy casserole.
Equipment Needed
- Rectangular White Ceramic Casserole Dish: Essential for even heat distribution and beautiful rustic presentation.
- Large Skillet: Needed with a wide surface area to properly brown the ground beef and build the creamy sauce.
- Box Grater: Always grate your cheddar fresh to ensure it melts smoothly and blisters perfectly without the anti-caking agents found in pre-shredded bags.
Step-by-Step Instructions
Step 1: Prep and Sauté the Onions
Begin by preheating your oven to 375°F (190°C). Grab your rectangular white ceramic casserole dish and set it aside on your rustic wooden table setting. In a large skillet over medium heat, warm 1 tbsp (15ml) of olive oil, then add the sliced onions and cook for 5 minutes until translucent and fragrant.
Step 2: Brown the Beef
Add the ground beef to the skillet with the cooked onions. Use a spatula to break it apart, cooking until you achieve deeply browned, crumbled ground beef with absolutely no pink remaining. Drain any excess grease, then season generously with your salt, black pepper, and garlic powder.
Step 3: Create the Creamy White Sauce
Reduce your stovetop heat to low to prevent the dairy from splitting. Stir the cream cheese, heavy whipping cream, and beef broth directly into the skillet with the beef and onions. Simmer gently while stirring continuously until a thick creamy white sauce forms, evenly coating the meat mixture.
Step 4: Assemble and Top
Transfer the creamy beef mixture directly into your prepared rectangular white ceramic casserole dish. Spread it out into a hearty, even layer using the back of a large spoon. Cover the entire base evenly with a thick layer of the freshly grated sharp orange cheddar cheese.
Step 5: Bake and Broil
Place the casserole dish in the preheated oven and bake for 15 minutes until the center is visibly bubbling. Switch your oven to the broil setting and watch carefully for 2 to 3 minutes. Remove the dish when the melted cheese is slightly browned, crispy, and blistered at the edges.
Step 6: Garnish and Serve
Allow the bubbling casserole to rest for 5 minutes before serving so the creamy sauce can properly set up. Finish by scattering the finely chopped fresh green parsley flakes evenly across the melted cheese. Serve warm and enjoy your incredible low-carb masterpiece!
Expert Tips for Success
- Drain the Fat: Always drain the excess grease after browning your beef to ensure your creamy white sauce stays thick and doesn’t become oily or separated.
- Room Temperature Dairy: Allow your cream cheese and heavy cream to sit on the counter for 20 minutes before cooking. This ensures a remarkably smooth sauce without any frustrating lumps.
- Watch the Broiler: The line between beautifully blistered browned cheese edges and burnt cheese is mere seconds; do not walk away from the oven while broiling!
- Grate Your Own Cheese: Pre-packaged shredded cheese contains starches that prevent a smooth melt and add unnecessary hidden carbs to your keto meal.
Storage & Reheating/Freezing
Store any leftover casserole in an airtight container in the refrigerator for up to 4 days. The flavors actually deepen overnight, making it incredible for meal prep lunches!
To reheat, microwave individual portions for 90 seconds, or place the entire dish back in a 350°F (175°C) oven until warmed through. If freezing, wrap the unbaked assembled casserole tightly in plastic wrap and foil; freeze for up to 3 months and bake from frozen, adding an extra 15 minutes to your cook time.
What to Serve With This
Looking for more low-carb inspiration? Pair this hearty dish with our famous keto biscuits to soak up every drop of that rich cream sauce. If you’re a fan of beef dinners, you’ll also love our cheesy beef cabbage casserole and the crowd-pleasing ground beef taco casserole.
For a lighter side, serve a fresh black lentil mediterranean salad alongside your meal. You can also start the night off right with some juicy garlic butter steak bites as a savory, protein-packed appetizer!
Frequently Asked Questions
Yes! You can assemble the casserole completely, skip the final baking step, wrap it tightly in foil and plastic wrap, and freeze for up to 3 months. Bake from frozen by adding an extra 15-20 minutes to the total oven time.
While heavy whipping cream provides the best thick, luxurious texture for a keto diet, you can substitute it with half-and-half or unsweetened almond milk. However, the final sauce will be slightly thinner and less rich.
To prevent a broken or oily sauce, always drain the excess grease from the browned ground beef before adding your dairy. Ensure your stovetop is on low heat when whisking in the cream cheese and heavy cream.
We highly recommend freshly grated sharp orange cheddar cheese for the best flavor contrast and beautiful blistered edges under the broiler. Monterey Jack, Pepper Jack, or Mozzarella are great melting alternatives if you prefer a milder taste.
Closing & Subscribe
This Keto Ground Beef Casserole proves that eating low-carb doesn’t mean sacrificing the rich, cheesy comfort foods you love. Between the perfectly browned beef and those blistered cheese edges, it is guaranteed to become a family favorite.
If you tried this recipe and loved it, please leave a comment below and let us know! Don’t forget to subscribe to our newsletter for more incredible keto recipes, and save this post to your Pinterest boards so you never lose it!
Recipe Card
Ultimate Keto Ground Beef Casserole
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C) and grab a rectangular white ceramic casserole dish. Heat the olive oil in a large skillet over medium heat. Add the sliced onions and cook for 5 minutes until translucent.
- Add the ground beef to the skillet. Break it apart and cook until browned and crumbled with no pink left. Drain excess grease, then season with salt, black pepper, and garlic powder.
- Reduce heat to low. Stir in the cream cheese, heavy whipping cream, and beef broth. Simmer and stir until a thick creamy white sauce forms and coats the meat.
- Transfer the beef mixture into the casserole dish and spread it into an even layer. Cover the top with a thick layer of freshly grated sharp orange cheddar cheese.
- Bake for 15 minutes until bubbling. Switch the oven to broil for 2 to 3 minutes until the cheese is slightly browned, crispy, and blistered at the edges.
- Let rest for 5 minutes. Garnish with finely chopped fresh green parsley flakes scattered evenly across the melted cheese before serving.
Notes
Watch the broiler very closely to ensure the cheese blisters perfectly without burning.
