This Cauliflower Bacon Cheese Casserole is a creamy, low-carb dinner made with roasted cauliflower, bacon, sharp cheddar cheese, cream cheese, and sour cream baked together until bubbly and golden on top.

It eats like a loaded baked potato without the starch. Rich, filling, and completely satisfying.

It’s a solid weeknight dinner and a natural fit for low-carb or keto eating (it holds up well for meal prep too).

I’ll often serve it alongside Easy Low Carb Soup Recipes or pair it with a simple green salad when I want something that covers all the bases without a lot of effort.

If you’re into low-carb comfort food and easy baked dinners, these are worth bookmarking too:

Ingredients You’ll Need

Fresh cauliflower roasts better than frozen here — frozen tends to release too much water, which makes the casserole watery rather than creamy.

Everything else is flexible; swap the cheddar for a mix of cheeses if you want a different flavor profile.

Ingredients

1 large head cauliflower, cut into florets
6 strips bacon, cooked and crumbled
1 1/2 cups shredded sharp cheddar cheese, divided
4 oz cream cheese, softened
1/2 cup sour cream
1/4 cup milk
3 cloves garlic, minced
2 tablespoons butter
1/2 teaspoon smoked paprika
Salt and black pepper to taste
2 green onions, sliced (for serving)

Directions

Preheat your oven to 425°F (220°C).
Toss the cauliflower florets with 1 tablespoon of oil (or melted butter), salt, and pepper, then spread them in a single layer on a baking sheet.
Roast for 20 to 25 minutes until the edges are golden and the florets are tender but not mushy.
This step is worth doing; roasted cauliflower has far more flavor than steamed.
While the cauliflower roasts, cook your bacon in a skillet over medium heat until crispy.
Transfer to a paper towel-lined plate and crumble once cool.
Reserve 1 tablespoon of the bacon drippings in the pan — youu0026#8217;ll use it to cook the garlic.
Add the garlic to the reserved drippings and cook over medium heat for about 60 seconds until fragrant.
In a large bowl, combine the softened cream cheese, sour cream, milk, smoked paprika, and cooked garlic.
Mix until smooth, then stir in 1 cup of the shredded cheddar and half the crumbled bacon.
Reduce oven temperature to 375u0026#176;F (190u0026#176;C).
Add the roasted cauliflower to the cheese mixture and toss gently until all the florets are coated.
Transfer everything to a greased 9×13-inch baking dish and spread into an even layer.
Scatter the remaining cheddar and bacon over the top.
Bake for 20 to 25 minutes until the cheese on top is melted, bubbly, and starting to turn golden at the edges.
Let it rest for 5 minutes before serving — the casserole firms up slightly as it sits.
Scatter sliced green onions on top and serve warm — enjoy!

Important Recipe Notes

Roast the cauliflower — don’t steam it. Steamed cauliflower is too wet and makes the casserole loose. Roasting drives off moisture and adds flavor.
Soften the cream cheese before mixing. Cold cream cheese leaves lumps in the sauce. Let it sit at room temperature for 30 minutes before you start.
Don’t skip the resting time. Five minutes out of the oven lets the casserole set slightly so it scoops cleanly instead of falling apart.
Storage. Store leftovers in an airtight container in the fridge for up to 3 days. Reheat in a 350°F oven for 15 minutes or in the microwave in short bursts, stirring between each.
Make ahead. Assemble the casserole up to 24 hours ahead, cover tightly, and refrigerate unbaked. Add 5 to 10 extra minutes to the bake time if going in cold.

How to Serve, Store & Customize This Recipe

Serving Scoop into bowls or onto plates while hot. Sliced green onions on top add freshness. This works as a main dish or a hearty side next to grilled chicken or steak.

Storing Leftovers keep in an airtight container in the fridge for up to 3 days. Reheat in a 350°F oven for 15 minutes or microwave in short bursts, stirring between each. It also freezes well for up to 2 months — thaw overnight in the fridge before reheating.

Customizing Add diced jalapeños for heat, or swap the smoked paprika for regular paprika if that’s all you have. For extra richness, top with a handful of crispy fried onions in the last 5 minutes of baking.

Cauliflower Bacon Cheese Casserole

Course: Recipes

Servings

servings

Prep time

minutes

Cooking time

minutes

Calories

300

kcal

Ingredients

1 large head cauliflower, cut into florets
6 strips bacon, cooked and crumbled
1 1/2 cups shredded sharp cheddar cheese, divided
4 oz cream cheese, softened
1/2 cup sour cream
1/4 cup milk
3 cloves garlic, minced
2 tablespoons butter
1/2 teaspoon smoked paprika
Salt and black pepper to taste
2 green onions, sliced (for serving)

Directions

Roast cauliflower florets at 425°F for 20 to 25 minutes until golden and tender.
Cook bacon until crispy, crumble, and reserve 1 tablespoon of drippings.
Cook garlic in drippings, then mix with cream cheese, sour cream, milk, paprika, 1 cup cheddar, and half the bacon.
Toss roasted cauliflower with cheese mixture and spread into a greased 9×13 baking dish.
Top with remaining cheddar and bacon, bake at 375°F for 20 to 25 minutes until bubbly and golden.
Top with green onions and serve warm — enjoy!

Notes

Use fresh or frozen cauliflower. If using frozen cauliflower, thaw and drain it well so the casserole does not turn watery.
For extra flavor, roast or steam the cauliflower first until just tender, but not mushy.
Use crispy cooked bacon for the best texture. You can also use turkey bacon if preferred.
Sharp cheddar gives the casserole a stronger cheesy flavor, but mild cheddar, mozzarella, Monterey Jack, or a cheese blend also works.
If the casserole looks too thick before baking, stir in a small splash of milk or cream.