Keto Mac Cheese Cauliflower

Featured in: Cozy Dinner Plates

This dish offers a creamy, low-carb twist on classic mac and cheese by replacing pasta with roasted cauliflower florets. The cheese sauce blends sharp cheddar, mozzarella, cream, and Parmesan, creating a rich and velvety texture. Crispy bacon crumbs add a savory crunch on top. Roasting the cauliflower enhances its natural sweetness and tenderness, making each bite flavorful and satisfying. Perfect for those seeking a hearty, gluten-free, and keto-friendly main.

Updated on Fri, 13 Feb 2026 10:48:00 GMT
Creamy keto mac and cheese with roasted cauliflower florets and crispy bacon crumbs baked until bubbly and golden.  Save to Pinterest
Creamy keto mac and cheese with roasted cauliflower florets and crispy bacon crumbs baked until bubbly and golden. | recipesbies.com

The first time I made this, my kitchen smelled like a breakfast diner collided with a fancy dinner party, and honestly, that's when I knew I'd invented something special. My partner wandered in mid-roast asking if we were having bacon for lunch, and I got to surprise them with creamy, cheesy cauliflower instead of the usual pasta guilt. There's something quietly rebellious about turning a comfort food classic inside out and making it actually fit your life instead of fighting against it. This version emerged from a random Tuesday when I had beautiful cauliflower and an unopened pack of bacon, plus the stubborn belief that low-carb didn't have to mean low-satisfaction.

I served this to my sister who claimed she'd never eat cauliflower voluntarily, and she went back for seconds without even realizing what she was eating until halfway through her bowl. That moment when someone's face changes because food just hit different is exactly why I keep experimenting in the kitchen. She's texted me for the recipe three times since.

Ingredients

  • 1 large head cauliflower, cut into bite-size florets: Look for a head that feels dense and heavy, with tight green leaves. The florets cook more evenly if they're roughly the same size, so take a breath and don't rush the cutting.
  • 2 tablespoons unsalted butter: Unsalted lets you control the salt level, which matters when you're building a cheese sauce. Use real butter, not the spreadable stuff, because it melts cleaner.
  • 1 cup heavy cream: This is non-negotiable for that silky, luxurious sauce. Don't use half-and-half or anything lighter, or the sauce will split when you add cheese.
  • 1 1/2 cups shredded sharp cheddar cheese: Sharp cheddar has more flavor punch than mild, which means you taste it instead of just tasting salt. Buy a block and shred it yourself if you can, because pre-shredded sometimes doesn't melt as smoothly.
  • 1/2 cup shredded mozzarella cheese: This stretches and melts beautifully, creating that gooey texture. It's the backbone of how creamy this sauce becomes.
  • 2 ounces cream cheese: Sounds weird, but it's the secret to silky sauce that doesn't break. Let it come to room temperature first so it blends in without lumps.
  • 1/4 cup grated Parmesan cheese: Fresh grated is worth the thirty seconds of effort. It adds sharpness that rounds out all the mild cheddar and mozzarella.
  • 6 slices bacon: I use thick-cut bacon because it crisps up with actual texture instead of shattering into dust. Cook it slow enough to render out fat, which is flavor you're leaving on the table if you rush.
  • 1/2 teaspoon garlic powder, 1/2 teaspoon onion powder, 1/4 teaspoon smoked paprika: These are your insurance against the sauce tasting one-note cheesy. Smoked paprika gives you depth without needing actual smoke.
  • Salt and freshly ground black pepper to taste: Fresh cracked pepper tastes sharper and brighter than the pre-ground stuff, which matters when it's one of your only seasonings.
  • 1 tablespoon chopped fresh chives or parsley, optional: The green at the end brightens everything up and makes it look intentional instead of just melted cheese.

Instructions

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Get your oven ready and prep the cauliflower:
Preheat to 425°F and line a baking sheet with parchment paper so cleanup doesn't haunt you later. Cut your cauliflower into florets about the size of golf balls, so they roast evenly and get that caramelized edge instead of staying pale.
Roast the cauliflower until golden:
Toss your florets with 1 tablespoon melted butter, salt, and pepper, then spread them in a single layer. They need 20 to 25 minutes in the oven, stirred halfway through, until the edges turn golden and they smell almost nutty.
Crisp up the bacon while cauliflower roasts:
In a skillet over medium heat, cook your bacon slices until they're deeply crispy, about 7 to 8 minutes. You want them shattered and crunchy, not soft, because that texture contrast is what makes people pause mid-bite and smile.
Build your cheese sauce from the ground up:
In a large saucepan over medium-low heat, melt the remaining butter, then add heavy cream, cream cheese, and your spices. Whisk for 2 to 3 minutes until the cream cheese fully dissolves and the sauce smells warm and savory.
Melt the cheese in without breaking the sauce:
Gradually stir in your cheddar, mozzarella, and Parmesan, whisking constantly so the sauce stays smooth and creamy. Keep the heat low because high heat makes cheese sauce split and look oily instead of silky.
Bring the cauliflower and sauce together:
Fold your roasted cauliflower into the cheese sauce gently, so the florets stay intact. Every piece should be coated, but you're not trying to pulverize anything.
Finish it in the oven with bacon and heat:
Transfer everything to a baking dish, scatter crumbled bacon over the top, then bake at 400°F for 7 to 10 minutes until it's bubbling at the edges and the top is golden. The oven step gives you that baked mac and cheese moment even though there's no pasta.
Garnish and serve while it's warm:
Sprinkle fresh chives or parsley over the top if you have it, then bring the whole dish to the table while it's still steaming. Serve it hot, because this sauce is best when it's actually warm in your mouth.
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Perfect for simmering soups, baking casseroles, and serving cozy one-pot meals straight from oven to table.
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Low-carb mac and cheese recipe featuring tender roasted cauliflower smothered in rich cheddar cheese sauce and crunchy bacon topping.  Save to Pinterest
Low-carb mac and cheese recipe featuring tender roasted cauliflower smothered in rich cheddar cheese sauce and crunchy bacon topping. | recipesbies.com

My mom called mid-dinner on the night I made this for my whole family, and when I told her what we were eating, she asked if I was feeling okay. But then everyone at the table went quiet in that way that means food is actually working, and she called back later asking for the recipe. That shift from skepticism to belief is the whole reason I keep cooking these kinds of things.

Why Roasted Cauliflower Changes the Game

Raw cauliflower tastes water-logged and bitter, steamed cauliflower tastes like penance, but roasted cauliflower tastes like you know what you're doing. The high heat turns the surface sugars brown and caramelized, which adds actual depth instead of just watering down your sauce. It's the difference between eating something healthy and eating something delicious that happens to be healthy.

The Bacon Question

Some people use pork rinds or crispy parmesan for crunch, which absolutely works if bacon isn't in your life. But bacon brings smoke and salt and richness that echo through every bite in a way that makes the whole dish feel less like a substitute and more like its own thing. Cook it until it shatters easily in your fingers, which takes longer than you think but is absolutely worth the wait.

Making It Your Own

This recipe is a foundation, not a rule book, and the best versions I've made came from riffing on what I had in the fridge. Swap your sharp cheddar for Gruyère if you want something more complex, add cayenne if you like heat creeping up on you at the end, or toss in roasted red peppers if you want color and sweetness. The cheese sauce is forgiving as long as you keep the heat low and stir constantly.

  • A pinch of smoked paprika goes a long way, so taste before you add more.
  • If your sauce breaks and looks grainy, whisk in a splash of cold cream off the heat and it usually smooths back out.
  • Make this ahead and reheat gently in a low oven, because it reheats better than you'd expect.
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Keto-friendly mac and cheese made with roasted cauliflower, creamy three-cheese sauce, and savory bacon crumbs for ultimate comfort food. Save to Pinterest
Keto-friendly mac and cheese made with roasted cauliflower, creamy three-cheese sauce, and savory bacon crumbs for ultimate comfort food. | recipesbies.com

This dish proves that low-carb eating doesn't have to be about deprivation, just reimagining what comfort looks like. Make it once and it becomes the thing people request, the meal you make when you want to feel taken care of or when you want to take care of someone else.

Answers to Recipe Questions

Can I use other cheeses in this dish?

Yes, alternatives like Gruyère or smoked gouda can add unique flavors while maintaining creaminess.

How should the cauliflower be prepared for roasting?

Cut into bite-sized florets, toss with melted butter, salt, and pepper, then roast until golden and tender.

What is the best way to get crispy bacon crumbs?

Cook bacon on medium heat until crispy, drain on paper towels, then crumble finely.

Can this dish be made ahead and reheated?

Yes, it reheats well in the oven; cover loosely to avoid drying out and warm until bubbly.

Is this suitable for gluten-free diets?

Absolutely, this dish uses cauliflower instead of pasta, making it naturally gluten-free.

What garnishes work best with this dish?

Fresh chopped chives or parsley complement the richness and add a touch of color.

Keto Mac Cheese Cauliflower

A creamy low-carb dish with roasted cauliflower florets and crispy bacon crumbs for rich flavor.

Prep duration
15 mins
Time to cook
35 mins
Overall time
50 mins
Published by Sophie Turner


Skill Level Easy

Cuisine Type American

Serves 4 Serving size

Dietary Details Contains No Gluten, Low-carb options

What you need

Vegetables

01 1 large head cauliflower, about 1.75 pounds, 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 & 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

Preheat oven and prepare baking sheet: Preheat oven to 425°F. Line a baking sheet with parchment paper.

Step 02

Season and roast cauliflower: Spread cauliflower florets on prepared baking sheet. Drizzle with 1 tablespoon melted butter, season with salt and pepper, and toss to coat evenly. Roast for 20 to 25 minutes until golden and tender, stirring once halfway through.

Step 03

Cook and crisp bacon: 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

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

Step 05

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

Step 06

Combine cauliflower with sauce: Add roasted cauliflower to cheese sauce and stir gently to coat all pieces evenly.

Step 07

Final bake and finish: Transfer cauliflower mixture to a baking dish. Sprinkle evenly with bacon crumbs. Bake at 400°F for 7 to 10 minutes until bubbly and golden on top. Garnish with fresh chives or parsley if desired. Serve immediately.

Equipment You'll Need

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

Allergy Details

Review all ingredients for allergens, and reach out to a healthcare pro if unsure.
  • Contains dairy products including cheese, cream, and butter
  • Contains pork in bacon preparation
  • Gluten-free but verify all ingredient labels for potential cross-contamination

Nutrition info (by portion)

Nutrition info is for guidance. Please consult a medical expert if you need advice.
  • Total Calories: 455
  • Fat content: 38 g
  • Carbohydrate: 8 g
  • Protein content: 20 g