This cheesy beef and cauliflower casserole is rich, comforting, and packed with melty cheese—perfect for a family dinner or a weeknight meal. It comes together in about an hour and reheats well, making it a great option for leftovers or meal prep.
If you’re craving a hearty casserole that balances savory beef with tender cauliflower and a creamy, cheesy sauce, this recipe is a reliable crowd-pleaser. It’s flexible, so you can adapt the protein, cheese, or seasonings to suit your preferences. Below you’ll find ingredient notes, step-by-step instructions, helpful tips, and serving suggestions to get the best results.
Let’s talk about casseroles
Casseroles—sometimes called hot dishes—are baked combinations of ingredients that are mixed or layered and cooked together. They’re a favorite for potlucks, family dinners, and leftovers because they travel well and feed a crowd. One of the best things about casseroles is how adaptable they are: swap proteins, try different cheeses, or add herbs and spices to match your taste. If you like a little heat, add hot sauce or red pepper flakes to the mix.
Main ingredients
This casserole combines seasoned ground beef with cauliflower and a creamy cheese sauce. For the beef, lean ground beef (about 93% lean) keeps the dish from becoming greasy, but you can use ground turkey or a fattier blend if you prefer more flavor. Cauliflower can be steamed or gently boiled until fork-tender—if you boil it, drain it thoroughly to avoid excess moisture.
The cheese sauce is made with cream cheese, heavy whipping cream, and shredded Monterey Jack, though any good melting cheese will work. For the best texture and flavor, buy a block of cheese and shred it yourself; it melts more evenly and contains no added anti-caking ingredients.
Topping and flavor notes
The topping is a simple custard-like mix that adds creaminess and helps the casserole set as it bakes. It combines eggs, sour cream, heavy cream, and a pinch of nutmeg for a warm, subtle note. Once poured over the beef and cauliflower, the mixture seeps into the casserole, creating a rich, silky interior. Finish with an extra layer of shredded cheese and bake until bubbly and golden.
Other keto casserole ideas
- Keto Chicken Parmesan Casserole
- Keto Mexican Beef and Green Bean Casserole
- Low Carb Chicken Bacon Ranch Casserole
- Low Carb Taco Casserole
Helpful hints
- You can substitute ground turkey for ground beef if you prefer a lighter protein.
- For best melting and flavor, shred cheese from a block rather than using pre-shredded cheese.
- If steaming cauliflower, allow a bit of extra time to drain or pat dry so the casserole doesn’t become watery.
- Nutmeg is subtle—use sparingly to add warmth without making the flavor sweet.
Main kitchen equipment and utensils
- 13×9-inch baking dish
- Large skillet
- Measuring spoons and measuring cups
- Mixing bowls
Ingredients (summary)
- Avocado oil spray
- 1½ pounds ground beef (or ground turkey)
- ½ teaspoon garlic powder
- ½ teaspoon onion powder
- ½ teaspoon salt
- ¼ teaspoon pepper
- 1 small head cauliflower, cut into florets
- 4 ounces cream cheese, softened and cubed
- ¾ cup heavy whipping cream, divided
- 2 cups shredded Monterey Jack cheese, divided (or other melting cheese)
- 4 eggs, lightly beaten
- ½ cup sour cream
- ¼ teaspoon nutmeg
Instructions
- Preheat oven to 350°F (175°C). Spray a 13×9-inch baking dish with oil and set aside.
- In a large skillet over medium-high heat, cook the ground beef with garlic powder, onion powder, salt, and pepper until no longer pink. Drain any excess grease and transfer the beef to the prepared baking dish.
- While the beef cooks, steam or boil the cauliflower until fork-tender. Drain well and add the cauliflower to the baking dish, stirring to combine with the beef.
- In the same skillet over medium heat, combine the cream cheese and ¼ cup heavy cream. Stir until smooth, then add 1 cup shredded cheese and stir until melted and smooth. Pour this sauce over the beef and cauliflower and stir to combine.
- In a small bowl, whisk together the eggs, sour cream, and the remaining ½ cup heavy cream. Pour the mixture evenly over the beef and cauliflower.
- Top the casserole with the remaining 1 cup shredded cheese. Bake for about 40 minutes, or until heated through and the top is golden. Let the casserole rest for 5 minutes before serving.
Storage and reheating
Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat individual portions in the microwave or reheat the casserole in a 350°F oven until warmed through. For best texture, cover with foil while reheating to prevent the cheese from drying out.
Serving suggestions
This casserole is satisfying on its own or served alongside a simple green salad or steamed non-starchy vegetables. For extra freshness, garnish with chopped parsley or sliced green onions before serving.
Splash of encouragement
Have fun in the kitchen and enjoy making memories with those you love.
