Grain-Free Keto Spinach Macaroni Inferno

Grain-Free Keto Spinach Macaroni Inferno

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Keto Macaroni Inferno Macronutrients

Grain-Free Keto Spinach Macaroni Inferno is the ultimate pasta-replacement comfort food for the keto diet. With its warm, cheesy layers of both red and white sauces interlaced with spinach, you won’t notice the carb-full pasta has been replaced with cauliflower in this keto cauliflower casserole!

Grain-Free Keto Spinach Macaroni Inferno is the ultimate keto caulimac casserole comfort food for the keto diet. With its warm, cheesy layers of both red and white sauces interlaced with spinach, you won’t notice the carb-full pasta has been replaced with cauliflower in this keto cauliflower hot dish! #macaroni #ketopasta #ketomacaroni #macaroniinferno #caulimac #ketocasserole

I started dabbling in a low carb lifestyle when my husband went through several trials of the Atkins diet. During that time, I created a lot of new meals for our family that stuck. That’s also when I started experimenting with cauliflower. Prepare to be amazed.

This Grain-Free Keto Spinach Macaroni Inferno recipe is actually not mine, so don’t direct your awe toward me quite yet. I adapted the recipe to the ketogenic diet, but the first time I had it was when one of my sweet  college roommates made it for me.

Overhead shot of serving of keto macaroni inferno casserole in a black bowl with fresh herbs on the table next to it

Keto Cauliflower Casserole Recipe

I was blessed to have some exceptionally terrific roommates. The six of us truly became a family. As the semesters went on and some of us took semesters off or got married, we added new members to the family until I think we now number eleven.

We still call each other sisters and try to get together as often as possible, even though we’ve been as far apart as Mexico, Italy, Washington, California, and Michigan (and several states in between!).

Just so you can get a sense of how much these girls were a family to me, we ate dinner together every night. We had a meeting every Sunday night and each of us took one day of the week to make dinner for everyone. It saved us money, but it also made our freezing little basement apartment so cozy.

Overhead closeup of corner of pan with keto macaroni inferno casserole

It didn’t take long for our friendships to become cemented forever over Anna’s cheesecakes, Shellise’s Chicken Pillows (check out my keto version, Kid-friendly Open-faced Keto Chicken Pillows), Kim’s many varieties of cookies, Neoma’s Chocolate Marshmallow Peanut Butter Yummy, and Katherine’s Macaroni Inferno.

FAQ’s for Grain-Free Keto Spinach Macaroni Inferno

What’s in this keto pasta casserole recipe?

The Macaroni Inferno is a baked pasta dish featuring both white and red sauces and normally made with rigatoni, which I’ve swapped out for cauliflower florets and tweaked in a few other ways.

Can I add meat to this keto vegetarian casserole?

The recipe for this keto cauliflower casserole I’ve written is vegetarian, but we often add crumbled ground beef or cooked, cubed chicken as a layer. Or load it up with other veggies. Mushrooms are a great low carb addition, too.

Really, I’ve done so many different things with this basic recipe and it never disappoints. If you’re needing a carb-up or carb cycle day, add cooked red lentils to the white sauce (lots of good nutrients in those guys!). Play around with it and enjoy! Let me know if you do something different with it so I can try it too! Closeup of low carb keto macaroni inferno casserole with gooey mozzarella cheese

How much healthier is this low carb cauliflwer casserole?

Fun fact: This should make you feel pretty good about making this meal. Just for fun and out of curiosity, I plugged in “rigatoni” instead of “cauliflower” into my nutrition calculator for this dish, and instead of the 12 grams of carbs per serving, it rocketed up to 66 grams of carbohydrates! That’s in one serving! For some people on keto, that would be way over their daily limit of carbs. So feel good about choosing this delicious version of the casserole instead! 

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Grain-Free Keto Spinach Macaroni Inferno is the ultimate pasta-replacement comfort food for the keto diet. With its warm, cheesy layers of both red and white sauces interlaced with spinach, you won’t notice the carb-full pasta has been replaced with cauliflower in this keto macaroni and cheese casserole! #ketomacaroniinferno

Other Delicious Keto Casseroles to Try!

You're going to want to check out these other fantastic and easy keto casseroles for your keto dinner today!

Keto Tuna Casserole

Photo Credit: trinakrug.com

Keto Mexican Bubble Pizza and Taco Seasoning Recipe

Keto Taco Casserole

Cheesy Keto Super Taco Instant Pot Omelet

If you love this keto caulimac recipe, give it a 5-star rating below!

Grain-Free Keto Spinach Macaroni Inferno

Grain-Free Keto Spinach Macaroni Inferno

Yield: 6 servings
Prep Time: 25 minutes
Cook Time: 30 minutes
Total Time: 55 minutes

Grain-Free Keto Spinach Macaroni Inferno is the ultimate easy pasta replacement comfort food for the keto diet. With its warm, cheesy layers of both red and white sauces, you won’t notice the carb-full pasta has been replaced with a vegetable!  

Ingredients

  • ½ cup butter, grass-fed if possible
  • 1 large onion, diced
  • ¼ cup almond flour
  • 2 tablespoons minced garlic
  • 1 cup heavy whipping cream
  • 1 tablespoon chicken, beef or vegetable bouillon paste
  • Freshly ground black pepper, to taste
  • 1 head cauliflower, cut into bite-sized florets and pieces
  • 2 cups mozzarella cheese, shredded
  • 1 ½ cups spinach, chopped
  • 15 ounces no sugar added pasta sauce

Instructions

  1. Preheat oven to 350°F.
  2. Steam cauliflower pieces until just tender, about 6 minutes. Do not overcook. The cauliflower will continue to cook in the oven.

For the béchamel sauce:

  1. Melt butter in skillet over medium heat. Add diced onion and sauté until onion is transparent, about 10 minutes.
  2. Add almond flour and minced garlic. Cook while stirring for 2 minutes.
  3. Add cream, bouillon paste, and pepper. Simmer until sauce is thickened, about 15 minutes.

To Assemble:

  1. Spread 1/3 of the pasta sauce on bottom of 9”x13” glass or metal pan. Spread 1/3 of the cauliflower pieces on the pasta sauce. Sprinkle 1/3 of the spinach on top of the cauliflower. Drizzle 1/3 of the béchamel sauce on top of the spinach, spreading it evenly with the back of a spoon. Sprinkle 1/3 of the mozzarella on top.
  2. Repeat these layers twice more until the ingredients are used up. Cover pan with foil.
  3. Bake in a 350°F oven for 20 minutes. Remove foil and bake for another 8-10 minutes, until cheese is melted on top.
Nutrition Information:
Yield: 6 Serving Size: 1
Amount Per Serving: Calories: 307 Total Fat: 25.7g Carbohydrates: 14.2g Protein: 6.9g

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Grain-Free Keto Spinach Macaroni Inferno is the ultimate keto caulimac casserole comfort food for the keto diet. With its warm, cheesy layers of both red and white sauces interlaced with spinach, you won’t notice the carb-full pasta has been replaced with cauliflower in this keto cauliflower hot dish! #macaroni #ketopasta #ketomacaroni #macaroniinferno #caulimac #ketocasserole

Grain-Free Keto Spinach Macaroni Inferno is the ultimate keto caulimac casserole comfort food for the keto diet. With its warm, cheesy layers of both red and white sauces interlaced with spinach, you won’t notice the carb-full pasta has been replaced with cauliflower in this keto cauliflower hot dish!

The whole family will love this keto macaroni and cheese casserole!

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2 thoughts on “Grain-Free Keto Spinach Macaroni Inferno”

  • I see in the directions where it says to add the cream to make the white sauce, but I don’t see any kind of cream in the ingredients list. What kind and how much? Thanks!

    • I’m so glad you spotted that! It’s one cup of heavy whipping cream. All fixed now. I hope you enjoy it as much as we do. Thanks again!

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