Keto Mac Cheese Cauliflower

Featured in: Rustic Family Dinners

This low-carb dish delivers creamy sharp cheddar blended with roasted cauliflower florets replacing pasta, offering a rich texture. The sauce combines heavy cream, cheeses, and warming spices, topped with crispy bacon crumbs for crunch. Roasting the cauliflower infuses it with a tender golden finish, while the cheese sauce binds it all with smooth richness. A perfect keto-friendly meal balancing savory, creamy, and smoky notes ideal for an easy main course or hearty side.

Updated on Fri, 13 Feb 2026 08:26:00 GMT
Creamy keto mac and cheese with roasted cauliflower and crispy bacon crumbs baked to golden perfection.  Save
Creamy keto mac and cheese with roasted cauliflower and crispy bacon crumbs baked to golden perfection. | hazeldish.com

There's a moment when you realize mac and cheese doesn't need pasta to be comforting, and mine came on a Tuesday evening when I was tired of feeling deprived by carb counting. I'd spent the afternoon roasting cauliflower and tossing bacon into a skillet without much of a plan, but when that golden, creamy sauce coated the florets, something shifted. What arrived at the table tasted nothing like a compromise, and everyone at dinner wanted seconds without asking if it was keto-friendly first.

My friend Sarah brought her kids over for dinner last spring, and I was nervous about serving them something so heavily modified from the original. Her youngest took one bite, paused, then asked if there was more, which somehow felt like winning. She told me later that her family now makes it every other week, which meant more to me than any recipe review ever could.

Ingredients

  • Cauliflower florets, 1 large head cut into bite-size pieces: This is your pasta substitute, and the key is cutting them roughly uniform so they roast evenly and soak up sauce without falling apart.
  • Unsalted butter, 2 tablespoons: Split between roasting the cauliflower and building your sauce, it adds a subtle richness that cream cheese alone can't achieve.
  • Heavy cream, 1 cup: This is what gives you that restaurant-quality thickness and prevents the sauce from breaking when you add cheese.
  • Sharp cheddar cheese, 1 1/2 cups shredded: Don't grab the pre-shredded stuff if you can help it, those anti-caking agents get in the way of melting smoothly.
  • Mozzarella cheese, 1/2 cup shredded: Mozzarella is your stretchy insurance, it helps bind everything together without making the sauce grainy.
  • Cream cheese, 2 ounces: This is the secret weapon that keeps the sauce silky and prevents it from becoming gluey as it sits.
  • Parmesan cheese, 1/4 cup grated: A smaller amount than the others because parmesan is loud and salty, it just needs to whisper in the background.
  • Bacon, 6 slices: The crunch is essential here, it's what keeps this from feeling like pure indulgence without any textural balance.
  • Garlic powder, onion powder, smoked paprika: These three are your flavor depth, each one adding a layer so the cheese doesn't taste one-dimensional.
  • Salt and freshly ground black pepper: Taste as you go because cheese is already salty, and over-seasoning can ruin the balance in seconds.

Instructions

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Get your oven ready and prep the cauliflower:
Heat your oven to 425°F and line a baking sheet with parchment paper so nothing sticks. Cut your cauliflower into florets about the size of walnuts, then toss them with melted butter, salt, and pepper until they're evenly coated.
Roast until golden and tender:
Spread the cauliflower in a single layer and roast for 20 to 25 minutes, stirring halfway through so every piece gets that nutty brown color. You want them fork-tender but still holding their shape, not falling apart into mush.
Cook bacon until it shatters:
In a skillet over medium heat, cook your bacon slices until they're crackling and deeply browned, which takes about 7 to 8 minutes. Drain them on paper towels and crumble them into small pieces once they're cool enough to handle.
Build your cheese sauce slowly:
In a large saucepan over medium-low heat, melt butter and add the heavy cream along with cream cheese, garlic powder, onion powder, smoked paprika, and a pinch of salt and pepper. Whisk constantly for 2 to 3 minutes until the cream cheese dissolves and the mixture is completely smooth.
Add cheese without rushing:
Once your cream base is smooth, gradually add the cheddar, mozzarella, and Parmesan, whisking after each addition until each batch melts completely. Keep the heat at medium-low and never let it boil, because that's when cheese sauces break and separate.
Combine cauliflower with sauce:
Pour the roasted cauliflower into your cheese sauce and stir gently, making sure every piece gets coated without crushing the florets. This is where you taste and adjust salt and pepper if needed.
Assemble and bake until golden:
Transfer everything into a baking dish, scatter the bacon crumbs across the top, and bake at 400°F for 7 to 10 minutes until the top is golden and the sauce is bubbling at the edges. The bacon crumbs toast slightly and add this incredible smoky crunch.
Finish with freshness:
Let it sit for a minute, then garnish with chopped chives or parsley if you have them, which adds a bright green color and cuts through the richness.
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Low-carb comfort food featuring tender roasted cauliflower smothered in rich cheddar cheese sauce.  Save
Low-carb comfort food featuring tender roasted cauliflower smothered in rich cheddar cheese sauce. | hazeldish.com

There's something about watching someone taste this for the first time and realize there's no regret attached to it that makes cooking worthwhile. You're not mourning pasta, you're enjoying something warm and luxurious that just happens to fit your life better.

Why Roasted Cauliflower Changes Everything

Raw cauliflower would be pale and watery, but roasting at high heat brings out sugars and creates that caramelized edge that tastes almost sweet. I used to think cauliflower needed to disappear into a dish, but here it becomes the star, and the sauce just amplifies what the oven already started.

The Cheese Sauce Strategy

Mixing three cheeses feels like overkill until you taste how they work together, each one bringing a different quality to the sauce. Sharp cheddar gives you flavor and body, mozzarella adds stretch and prevents graininess, and Parmesan whispers umami in the background, so it never tastes one-note or heavy.

Making This Meal Your Own

This recipe is flexible without being fragile, so you can adjust it to match what you have or what you're craving that day. I've added cayenne pepper for heat, swapped Gruyère for cheddar when I wanted something nuttier, and even folded in crispy prosciutto instead of bacon when I had it on hand.

  • For extra crunch, try mixing crushed pork rinds with your bacon crumbs before sprinkling on top.
  • If you want more vegetables, add roasted broccoli alongside the cauliflower without changing the proportions.
  • Make it ahead by assembling everything except baking, then pop it in the oven when you're ready to eat, and just add a few extra minutes to the baking time.
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Decadent keto mac and cheese topped with smoky bacon crumbs and fresh herbs for a satisfying meal. Save
Decadent keto mac and cheese topped with smoky bacon crumbs and fresh herbs for a satisfying meal. | hazeldish.com

This dish proves that eating the way your body needs doesn't mean sacrificing the meals that make you feel taken care of. Every time you make it, you're choosing abundance over restriction, and that matters more than any number on a scale.

Recipe Help & Answers

What vegetable is used instead of pasta?

Cauliflower florets replace traditional pasta, offering a low-carb and nutrient-rich base.

How is the bacon prepared for this dish?

Bacon is cooked until crispy, then crumbled into small crumbs to add a crunchy, smoky topping.

Which cheeses contribute to the creamy texture?

Sharp cheddar, mozzarella, cream cheese, and Parmesan blend for a smooth, rich, and flavorful sauce.

What spices enhance the flavor of the sauce?

Garlic powder, onion powder, smoked paprika, salt, and pepper provide savory depth and subtle smoky warmth.

Can this dish be cooked ahead and reheated?

Yes, it reheats well in the oven, preserving its creamy texture and crispy bacon topping.

Keto Mac Cheese Cauliflower

Low-carb creamy mac with roasted cauliflower and crunchy bacon topping, packed with sharp cheese flavors.

Prep Time
15 min
Time to Cook
35 min
Overall Time
50 min
Created by Isabel Grant


Skill Level Easy

Inspired By American

Makes 4 Number of servings

Dietary Details Without Gluten, Low Carbohydrate

What You Need

Vegetables

01 1 large head cauliflower (about 28 oz), cut into bite-size florets

Dairy

01 2 tablespoons unsalted butter
02 1 cup heavy cream
03 1.5 cups shredded sharp cheddar cheese
04 0.5 cup shredded mozzarella cheese
05 2 ounces cream cheese
06 0.25 cup grated Parmesan cheese

Meats

01 6 slices bacon

Pantry and Spices

01 0.5 teaspoon garlic powder
02 0.5 teaspoon onion powder
03 0.25 teaspoon smoked paprika
04 Salt and freshly ground black pepper to taste

Garnish

01 1 tablespoon chopped fresh chives or parsley

How to Make It

Step 01

Prepare oven and cauliflower: Preheat oven to 425°F. Line a baking sheet with parchment paper. Spread cauliflower florets on the prepared baking sheet, drizzle with 1 tablespoon melted butter, season with salt and pepper, and toss to coat.

Step 02

Roast cauliflower: Roast for 20 to 25 minutes until golden and tender, stirring once halfway through cooking.

Step 03

Cook bacon: Meanwhile, cook bacon in a skillet over medium heat until crispy, about 7 to 8 minutes. Drain on paper towels and crumble into fine pieces. Set aside.

Step 04

Create cheese sauce base: In a large saucepan over medium-low heat, melt the remaining 1 tablespoon butter. Add heavy cream, cream cheese, garlic powder, onion powder, smoked paprika, and a pinch of salt and pepper. Whisk until smooth and cream cheese is fully melted, approximately 2 to 3 minutes.

Step 05

Incorporate cheeses: Gradually stir in cheddar, mozzarella, and Parmesan cheese. Continue whisking until the sauce is smooth and thick. Do not allow the sauce to boil.

Step 06

Combine cauliflower and sauce: Add roasted cauliflower to the cheese sauce and stir gently to coat all florets evenly.

Step 07

Final baking: Transfer mixture to a baking dish, sprinkle evenly with bacon crumbs, and bake at 400°F for 7 to 10 minutes until bubbly and golden on top.

Step 08

Finish and serve: Garnish with fresh chives or parsley if desired. Serve immediately while hot.

Tools You’ll Need

  • Baking sheet
  • Parchment paper
  • Large saucepan
  • Skillet
  • Baking dish
  • Whisk
  • Mixing spoon

Allergy Details

Review each ingredient for allergens. Always reach out to a healthcare professional for help if you’re unsure.
  • Contains dairy including cheese, cream, and butter
  • Contains pork
  • Gluten-free, but verify all ingredient labels for potential cross-contamination if highly sensitive

Per-Serving Nutrition

Nutritional data is for general reference only. It shouldn't replace advice from your doctor.
  • Calorie Count: 455
  • Fats: 38 g
  • Carbohydrates: 8 g
  • Proteins: 20 g