My son wanted homemade mac and cheese for his birthday, and I was not about to eat a plate of pasta on lazy keto. Keto cauliflower no-mac and cheese was the answer, a cheese sauce built for cauliflower instead of noodles.
Traditional cheese sauce leans on flour to thicken it. This one skips flour entirely, cream cheese and heavy cream do that job instead, so there is nothing here that does not belong on a keto plate. My kids got theirs with real noodles, and everyone was happy at the same table.
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Chef Jenn’s Take on Cauliflower No-Mac ‘n Cheese
Most cheese sauces rely on a flour-based roux to thicken and hold everything together. That is the one ingredient that does not have a place in a keto kitchen, so this version skips it entirely and leans on cream cheese and heavy cream instead.
I tested this with a straight 3-cheese Italian blend, bacon, and green onions, but the base itself is flexible. A reader made it with ham and Swiss instead and reported it just as good, which tracks, since any good melting cheese works here as long as you keep the cream cheese and heavy cream base the same.
Baking dish size matters more than people expect. A full baking dish needs about 20 minutes, but individual ramekins cook through in as little as 8 to 10 minutes, so check them earlier than you would a full-size casserole. You are looking for a bubbly, browned top and tender-crisp cauliflower underneath, not fully soft cauliflower that has gone mushy in the oven.
What You’ll Love About Cauliflower No-Mac ‘n Cheese
- Tastes like real mac and cheese, minus the noodles, which makes it an easy sell to the whole table.
- No flour or thickener needed, just cream cheese, heavy cream, and good melting cheese.
- Flexible enough to swap in ham and Swiss, cheddar, or blue cheese if you want a different flavor.
Ingredients
- Cauliflower – One whole head, broken into bite-size florets.
- Cream cheese – Full fat, this is what thickens the sauce in place of flour.
- Heavy cream – Full fat only, for the same reason as the cream cheese.
- Garlic – Fresh, minced. Skip the jarred kind for this one.
- Mustard powder – Adds depth without a strong mustard flavor on its own.
- Shredded cheese – A 3-cheese Italian blend works well, but cheddar, ham and Swiss, or even blue cheese are all good swaps as long as it melts well.
- Bacon – Cooked crisp and drained, then crumbled or chopped.
- Green onions – Sliced, both the white and green parts.
How to Make Cauliflower No-Mac ‘n Cheese
Scroll down for the full recipe card with exact measurements and printable instructions.
Warm the cream cheese and heavy cream together in a pot over low heat, stirring frequently until smooth and combined.
Add the mustard powder and garlic to the warmed cream mixture, then remove from the heat and stir in the shredded cheese, crisp bacon, and green onions.
Break the cauliflower into bite-size florets, rinse, and shake dry. Add it to a large bowl with about half the cheese sauce, and stir well.
Add more sauce if needed so the cauliflower is well coated but not drowning, then transfer to a baking dish or individual ramekins.
Bake at 375°F until bubbly and browned on top, about 20 minutes for a full dish or 8 to 10 minutes for individual ramekins. Check ramekins early since they cook much faster.
Make It A Meal
If you want a noodle-adjacent side on the same table for anyone eating pasta, Zucchini Spaghetti gives that texture without derailing the meal. For a protein pairing, Bacon-Wrapped Pork Tenderloin or Lemon Oregano Chicken Kabobs both work well alongside this dish.
Storage
Store leftovers in an airtight container in the fridge for up to 4 days. Reheat in a 350°F oven until warmed through, or in the microwave in short bursts. This freezes reasonably well for up to 2 months, though the cauliflower texture softens somewhat after thawing. Thaw overnight in the fridge before reheating.
Add Preferred SourceCauliflower No-Mac ‘n Cheese
Ingredients
- 1 each head of cauliflower
- 1/2 block cream cheese 4 oz
- 1 cup heavy cream
- 1 clove garlic minced
- 1 teaspoon mustard powder
- 2 cups shredded Italian blend cheese
- 4 slices bacon cooked crisp and drained
- 1/2 cup green onions sliced
Instructions
- To make the sauce, add the cream cheese and cream to a pot and warm it slowly, stirring frequently, over low heat. When combined, add the mustard powder and garlic. Remove from the heat and stir in the shredded cheese blend, crisp-cooked bacon, and green onions. Set aside.
- Prepare the cauliflower by breaking the head into bite-size florets, cutting them in quarters if necessary. Remove excess stems. Rinse and shake to dry.
- Put the cauliflower into a large bowl and add about half the cheese sauce. Stir well to combine. You want it saucy but not drowning in sauce, so add more if needed.
- Put the cheesy cauliflower into a baking dish or individual ramekins and bake in a 375-F oven for about 20 minutes. Individual size dishes will require much less cooking time, maybe 8-10 minutes, so check frequently. You want the top to be bubbly and brown and the cauliflower tender-crisp.
Notes
Recipe Card Tips
- Check individual ramekins well before the 20-minute mark meant for a full dish. They can be done in as little as 8 to 10 minutes.
- Don’t drown the cauliflower in sauce before baking. Coated but not swimming keeps the texture from turning soggy.
- Stick with the cream cheese and heavy cream base even if you change the cheese blend. That combination is what holds the sauce together without flour.
Nutrition
A Note on Nutritional Information
Nutritional information for this recipe is provided as a courtesy and is calculated based on available online ingredient information. It is only an approximate value. The accuracy of the nutritional information for any recipe on this site cannot be guaranteed. Erythritol carbs (sugar substitutes) are not included in the carbohydrate counts as they have been shown not to impact blood sugar, and they have zero calories and zero carbs. Net carbs are the total carbs minus fiber.
Like This? Also Try:
- Crack Cauliflower with a sauce so good, you’ll be licking your plate
- Creamy Cauliflower Soup – this is a restaurant-quality dish that’s easier than you think!
- Antipasto Salad – unbelievable flavor in this dish!
Cauliflower and cheese sauce sounds like a winning combo! Yum!
The bacon and green onion combo with the cheese really transform the flavor. Yum!
I made a variation of this with your recommended ham and Swiss and omg!! So good!!
I’m glad you liked it! Ham & Swiss is one of my favs!
This looks amazing! Cheese and Bacon OMGoodness!
It really is a terrific combination! Savory, salty, and a bit sweet – YUM!