Indulge in a delicious and healthy cauliflower keto casserole that is perfect for those following a low-carb diet. This dish combines tender cauliflower florets with creamy cheddar cheese, heavy cream, and crispy bacon for a satisfying meal that is sure to please everyone at the table.
While most of the ingredients in this recipe are common, you might need to pay special attention to heavy cream. Unlike regular milk, heavy cream is thicker and richer, providing the creamy texture essential for this casserole. Make sure to pick up a carton from the dairy section of your supermarket.

Ingredients for Cauliflower Keto Casserole
Cauliflower: The star of the dish, providing a low-carb alternative to traditional potatoes.
Cheddar cheese: Adds a rich, cheesy flavor and helps bind the casserole together.
Heavy cream: Provides a creamy texture and enhances the richness of the casserole.
Bacon: Adds a smoky, savory element and a bit of crunch.
Garlic powder: Infuses the dish with a subtle garlic flavor without the need for fresh garlic.
Onion powder: Adds a hint of onion flavor, complementing the other ingredients.
Salt: Enhances the overall flavor of the dish.
Pepper: Adds a touch of heat and balances the flavors.
Technique Tip for Making This Keto Casserole
When steaming the cauliflower, make sure not to overcook it. You want the florets to be tender but still slightly firm to maintain a good texture in the casserole. Overcooked cauliflower can become mushy and release too much water, which can affect the consistency of your dish. To ensure even cooking, cut the florets into uniform sizes.
Suggested Side Dishes
Alternative Ingredients
cauliflower - Substitute with broccoli: Broccoli has a similar texture and can be used in the same way as cauliflower in casseroles.
shredded cheddar cheese - Substitute with shredded mozzarella cheese: Mozzarella melts well and provides a creamy texture, though it has a milder flavor.
heavy cream - Substitute with coconut cream: Coconut cream is a dairy-free alternative that provides a rich and creamy texture.
cooked and crumbled bacon - Substitute with turkey bacon: Turkey bacon is a leaner option and provides a similar smoky flavor.
garlic powder - Substitute with fresh minced garlic: Fresh minced garlic offers a more robust and aromatic flavor.
onion powder - Substitute with finely chopped onions: Fresh onions provide a more intense flavor and texture.
salt - Substitute with soy sauce: Soy sauce adds a savory umami flavor and can enhance the overall taste of the casserole.
pepper - Substitute with cayenne pepper: Cayenne pepper adds a bit of heat and can elevate the flavor profile of the dish.
Other Alternative Recipes Similar to This Keto Casserole
How to Store or Freeze This Keto Casserole
Allow the cauliflower casserole to cool completely before storing. This prevents condensation, which can make the dish soggy.
Transfer the cooled casserole to an airtight container. If you prefer, you can also divide it into individual portions for easier reheating.
Store the container in the refrigerator for up to 3-4 days. This ensures the cheddar cheese and heavy cream maintain their texture and flavor.
For longer storage, consider freezing the casserole. Wrap the entire baking dish tightly with plastic wrap, followed by a layer of aluminum foil. Alternatively, you can transfer the casserole to a freezer-safe container.
Label the container with the date to keep track of its freshness. The casserole can be frozen for up to 2-3 months.
When ready to enjoy, thaw the casserole in the refrigerator overnight. This gradual thawing process helps maintain the integrity of the cauliflower florets and other ingredients.
Reheat the casserole in a preheated oven at 350°F (175°C) for about 20-25 minutes, or until heated through. If reheating from frozen, it may take an additional 10-15 minutes.
For a quicker option, you can also reheat individual portions in the microwave. Place the portion on a microwave-safe plate and cover with a microwave-safe lid or another plate. Heat on medium power in 1-minute intervals until warmed through.
To refresh the texture, consider adding a sprinkle of fresh shredded cheddar cheese on top before reheating. This will give the casserole a delightful, melty finish.
Always check the internal temperature of the reheated casserole to ensure it reaches at least 165°F (74°C) for safe consumption.
How to Reheat Leftovers
Oven Method: Preheat your oven to 350°F (175°C). Place the leftover cauliflower keto casserole in an oven-safe dish. Cover it with aluminum foil to prevent it from drying out. Heat for about 15-20 minutes, or until the casserole is warmed through and the cheese is bubbly again. Remove the foil for the last 5 minutes if you want a crispy top.
Microwave Method: Transfer a portion of the casserole to a microwave-safe dish. Cover it with a microwave-safe lid or a damp paper towel to retain moisture. Heat on medium power for 2-3 minutes, stirring halfway through to ensure even heating. Continue to heat in 30-second intervals if needed, until the casserole is hot.
Stovetop Method: Place the leftover cauliflower keto casserole in a non-stick skillet over medium-low heat. Add a splash of heavy cream or a bit of butter to keep it moist. Cover the skillet with a lid and heat for about 5-7 minutes, stirring occasionally, until the casserole is heated through.
Air Fryer Method: Preheat your air fryer to 350°F (175°C). Place the casserole in an air fryer-safe dish or line the basket with aluminum foil. Heat for about 5-7 minutes, checking halfway through to ensure it doesn't overcook. This method will give you a crispy top layer.
Toaster Oven Method: Preheat your toaster oven to 350°F (175°C). Place the cauliflower keto casserole in a toaster oven-safe dish. Cover with aluminum foil and heat for about 10-15 minutes, or until warmed through. Remove the foil for the last few minutes if you prefer a crispy top.
Best Tools for Making This Keto Casserole
Oven: Used to bake the casserole at a consistent temperature of 375°F (190°C) until the top is golden and bubbly.
Steamer basket: Utilized to steam the cauliflower florets until they are tender, which takes about 10 minutes.
Mixing bowl: A large bowl where all the ingredients are combined and mixed together.
Baking dish: The dish in which the mixture is transferred and spread evenly before baking.
Cheese grater: Used to shred the cheddar cheese if it is not pre-shredded.
Knife: Essential for cutting the cauliflower into florets.
Cutting board: Provides a safe surface for cutting the cauliflower.
Measuring cups: Used to measure out the heavy cream and shredded cheddar cheese accurately.
Measuring spoons: Used to measure the garlic powder, onion powder, salt, and pepper.
Spatula: Helps in mixing the ingredients thoroughly in the mixing bowl and transferring the mixture to the baking dish.
Tongs: Useful for handling the steamed cauliflower florets.
Cooling rack: Allows the casserole to cool slightly before serving.
How to Save Time on Making This Casserole
Pre-cook the cauliflower: Steam the cauliflower florets in advance and store them in the fridge until you're ready to assemble the casserole.
Use pre-shredded cheese: Save time by using pre-shredded cheddar cheese instead of shredding it yourself.
Pre-cooked bacon: Opt for pre-cooked bacon to eliminate the need for cooking and crumbling it yourself.
Mix in the baking dish: Combine all ingredients directly in the baking dish to save on cleanup time.
Microwave steaming: Use the microwave to steam the cauliflower quickly instead of using a stovetop steamer.

Cauliflower Keto Casserole
Ingredients
Main Ingredients
- 1 head Cauliflower cut into florets
- 1 cup Cheddar Cheese shredded
- ½ cup Heavy Cream
- 4 slices Bacon cooked and crumbled
- 1 teaspoon Garlic Powder
- 1 teaspoon Onion Powder
- to taste Salt and Pepper
Instructions
- Preheat oven to 375°F (190°C).
- Steam cauliflower florets until tender, about 10 minutes.
- In a mixing bowl, combine steamed cauliflower, cheddar cheese, heavy cream, bacon, garlic powder, onion powder, salt, and pepper.
- Transfer mixture to a baking dish and spread evenly.
- Bake in preheated oven for 20 minutes, until top is golden and bubbly.
- Let cool slightly before serving.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Keto Casserole
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