• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Bonus - free keto meal plan
  • Home
  • About
  • Media
Lara Clevenger
  • Recipes
  • Dinner
  • Work With Me
menu icon
go to homepage
subscribe
search icon
Homepage link
  • Home
  • About
  • Recipes
  • Dietitian Services
  • Camping
  • Media
×
Home » Recipes » Keto

Low Carb Spaghetti Sauce

Published: Feb 21, 2023 by Lara Clevenger, Registered Dietitian This post may contain affiliate links - read my disclaimer for full details... 1 Comment

  • Facebook
  • Twitter
  • Yummly
Jump to Recipe

This Low Carb Spaghetti Sauce recipe is made with minimal ingredients and will soon become a family favorite. Bursting with flavor, this homemade keto spaghetti sauce will rival even the best store bought brands!

Keto spaghetti sauce in a saucepan with a spatula
Table of Contents
  • Low Carb Spaghetti Sauce Recipe
  • Why you'll love this Homemade Keto Spaghetti Sauce
  • Ingredients
  • How to make Low Carb Spaghetti Sauce
  • What to serve with keto spaghetti sauce
  • How to store
  • How to reheat
  • More keto recipes to try
  • Keto Spaghetti Sauce Recipe
  • Readers Favorite Recipes

Low Carb Spaghetti Sauce Recipe

You'll love this low carb marinara sauce. It works great as a keto pasta sauce, a pizza sauce, and your favorite Italian recipes!

It's a great recipe if you're looking for a homemade sauce that's super versatile!

This keto spaghetti sauce recipe is super easy to make! It doesn't use fresh tomatoes, which would make this recipe take MUCH longer to cook.

This red sauce is a basic recipe that even the most novice cook can succeed at. Spices and fresh herbs are the secret ingredients in this low carb pasta sauce.

keto spaghetti sauce in a glass jar with a spoon

Why you'll love this Homemade Keto Spaghetti Sauce

  • Quick and Easy Recipe! One pot recipe and uses simple ingredients that you can get at your local grocery store.
  • Low in carbs and great for a keto diet. No added sugar, unlike many store bought brands.
  • Fresh flavorful ingredients
  • 5g net carbs per ¼ cup
Keto spaghetti sauce in a saucepan with a piece of basil

Ingredients

  • olive oil or avocado oil
  • onion
  • fresh garlic
  • crushed tomatoes
  • seasoning: kosher salt or coarse salt, herbes de Provence, oregano, black pepper
  • fresh basil
ingredients post for Keto Spaghetti Sauce

How to make Low Carb Spaghetti Sauce

  1. Heat a saucepan over medium high heat. Add the avocado oil, and once the oil is hot add the diced onions. Cook until the onions are translucent. 
  2. Next add the garlic. 
  3. Once the garlic is fragrant add the crushed tomatoes. Stir. 
  4. Bring to a boil and then add the dried seasonings. Stir.
  5. Reduce the sauce to a simmer. Cover and cook for 20 minutes, stirring occasionally.
  6. Remove from heat. Add in the basil and stir.
diced onions being cooked in a skillet
sauté onions
cooked diced onions in a saucepan
cook until translucent
cooked diced onions and garlic in a saucepan
add garlic
crushed tomatoes in a saucepan
add crushed tomatoes
crushed tomatoes in a saucepan with spices on top
add seasonings and cook
crushed tomatoes in a saucepan with chopped fresh basil
remove from heat and add basil

What to serve with keto spaghetti sauce

This low carb pasta sauce is so versatile! Serve it with any of the following:

  • Easy Air Fryer Keto Meatballs Recipe
  • Air Fryer Frozen Brussel Sprouts
  • Baked Frozen Turkey Meatballs
  • Keto Turkey Meatballs
  • Keto noodles such as zoodles, spaghetti squash, or shirataki noodles
  • Keto meat sauce (I prefer ground beef and Italian sausage)
keto spaghetti sauce in a glass jar on a white background

How to store

  • Store in a mason jar or airtight glass jar for up to 7 days. I even store mine in old Rao's pasta sauce containers.

How to reheat

Place desired amount of sauce into a small sauce pan and warm up on medium low. If serving with meatballs you can add the meatball to the sauce and reheat those as well.

keto spaghetti sauce in a glass jar with a spoon

More keto recipes to try

If you loved this easy low carb spaghetti sauce, check out these other delicious recipes.

  • Easy Keto Ground Beef Zucchini Casserole
  • Keto Chicken Bacon Ranch Casserole
  • Easy Keto Crockpot Pork Chops
  • Instant Pot Mashed Cauliflower
  • Air Fryer Brussel Sprouts
PHOTO COLLAGE OF RECIPE WITH THE WORDS "VIEW MEAL PLANS"
Keto spaghetti sauce in a saucepan with a spatula

Keto Spaghetti Sauce Recipe

Lara Clevenger, Registered Dietitian
This Keto Spaghetti Sauce recipe is made with minimal ingredients and will soon become a family favorite. Bursting with flavor, this homemade keto marinara sauce will rival even the best store bought brands!
4.97 from 28 votes
Print Recipe Pin Recipe
Prep Time 5 minutes mins
Cook Time 25 minutes mins
Total Time 30 minutes mins
Course Sauce
Cuisine American
Servings 12
Calories 35 kcal

Ingredients
  

  • 1 tablespoon avocado oil
  • ⅓ cup onion diced
  • 4 cloves garlic minced
  • 28 oz crushed tomatoes
  • 1 teaspoon salt
  • ½ teaspoon herbes de provence
  • ¼ teaspoon oregano
  • ¼ teaspoon black pepper
  • 2 tablespoon fresh basil chopped

Instructions
 

  • Heat a saucepan over medium high heat. Add the avocado oil, and once the oil is hot add the diced onions. Cook until the onions are translucent.
  • Next add the garlic.
  • Once the garlic is fragrant add the crushed tomatoes. Stir.
  • Bring to a boil and then add the dried seasonings. Stir.
  • Reduce the sauce to a simmer. Cover and cook for 20 minutes, stirring occasionally.
  • Remove from heat. Add in the basil and stir.

Notes

  • 12, ¼ servings

Nutrition

Calories: 35kcalCarbohydrates: 6gProtein: 1gFat: 1gSaturated Fat: 0.2gPolyunsaturated Fat: 0.2gMonounsaturated Fat: 1gSodium: 282mgPotassium: 207mgFiber: 1gSugar: 3gVitamin A: 163IUVitamin C: 7mgCalcium: 28mgIron: 1mg
Keyword keto pasta sauce, keto spaghetti sauce, low carb marinara sauce
Tried this recipe?Let us know how it was!

Readers Favorite Recipes

  • 17 Irresistible Sheet Pan Recipes for Big Flavor and Easy Cleanup

    17 Irresistible Sheet Pan Recipes for Big Flavor and Easy Cleanup

    When you want a satisfying meal without a sink full of dishes, sheet pan recipes come to the rescue. These 17 recipes bring together fresh ingredients, simple prep, and oven-roasted goodness all in one place. Expect crispy edges, tender centers, and flavors that develop beautifully as everything cooks together. Whether you’re feeding family or just...Read…

    View Recipe


  • 17 Dinners That Make You Look Like You’ve Got Your Life Together (Even If You Don’t)

    17 Dinners That Make You Look Like You’ve Got Your Life Together (Even If You Don’t)

    If the nightly what’s for dinner panic is your worst enemy, these 17 recipes are about to become your new best friends. Easy, delicious, and packed with flavor, they’re the kind of meals that taste like you tried really hard—even if you totally didn’t. From juicy meats to veggie-packed favorites, every recipe delivers comfort, satisfaction,...Read…

    View Recipe


  • 18 Salmon Recipes That Make Dinner Feel Like a Five Star Splash

    18 Salmon Recipes That Make Dinner Feel Like a Five Star Splash

    Salmon nights just got a serious glow up. These 18 recipes bring juicy bites, crispy edges, bold flavors, and the kind of aroma that gets everyone sprinting to the table. From pan seared perfection to saucy baked beauties, each dish turns your kitchen into a seafood paradise. Get ready to flip, sizzle, and serve plates...Read…

    View Recipe


  • 19 Mushroom Dishes So Good, You’ll Start Calling Yourself a ‘Fun-Gourmet’

    19 Mushroom Dishes So Good, You’ll Start Calling Yourself a ‘Fun-Gourmet’

    Mushrooms are versatile, meaty, and downright magical in the kitchen—and these 19 recipes show you exactly why. From creamy pastas and sizzling stir-fries to crispy bites and cozy casseroles, each dish brings rich flavor, satisfying textures, and a little wow factor. Get ready to impress your taste buds and maybe even your friends with how...Read…

    View Recipe


  • 23 Slow Cooker Recipes That Do the Cooking While You Do Absolutely Nothing

    23 Slow Cooker Recipes That Do the Cooking While You Do Absolutely Nothing

    If your dream is to come home to a meal that magically cooked itself, your slow cooker is basically your fairy godmother. These 23 recipes simmer, bubble, and build big flavor while you live your best life doing anything else. Toss in the ingredients, hit the button, and return later to a kitchen that smells...Read…

    View Recipe


  • 18 Wraps That Are Basically a Party in Your Hands

    18 Wraps That Are Basically a Party in Your Hands

    Forget basic sandwiches—these 18 wraps are here to steal the spotlight. Packed with vibrant fillings, bold sauces, and a little sass, each one delivers maximum flavor with minimal fuss. Perfect for lunch, dinner, or snacking on the go, these wraps are fun, flirty, and guaranteed to make your taste buds dance. Stuffed Turkey Roll Ups...Read…

    View Recipe


More Keto

  • 30 chicken thigh keto recipes.
    30 Keto Chicken Thigh Recipes
  • Spaghetti Squash Boats with a fork and a grey napkin on the side
    Spaghetti Squash Boats
  • Air Fryer Sugar Snapped Peas on a white plate with an orange napkin
    Air Fryer Sugar Snapped Peas
  • A cup of vanilla ice cream with three candy pieces on top, partially melted, with a spoon inserted on the right side.
    White Chocolate Peppermint Protein Ice Cream with Almond Milk

Reader Interactions

Primary Sidebar

Hi, I’m Lara, a Registered Dietitian and Personal Trainer with a passion for food and travel.

Read more

Recent posts

  • A whole roasted chicken garnished with rosemary and surrounded by roasted vegetables on a white platter, with a glass of wine and side dishes nearby.
    17 Irresistible Sheet Pan Recipes for Big Flavor and Easy Cleanup
  • A stacked roast beef sandwich with greens and pine nuts on rustic bread, placed on a wooden surface.
    17 Dinners That Make You Look Like You’ve Got Your Life Together (Even If You Don’t)
  • A close-up of sliced spinach and cream cheese roulades with smoked salmon and black caviar, arranged on a wooden board.
    18 Salmon Recipes That Make Dinner Feel Like a Five Star Splash
  • 19 Mushroom Dishes So Good, You’ll Start Calling Yourself a ‘Fun-Gourmet’
  • creamy cheese ranch chicken on a bowl with spoon
    23 Slow Cooker Recipes That Do the Cooking While You Do Absolutely Nothing
  • chicken, onion, mint leaves and yogurt rolled in pita wrap
    18 Wraps That Are Basically a Party in Your Hands
free keto meal plan image

Footer

↑ back to top

  • Recipes
  • About
  • Contact
  • Disclaimer
  • Services

The information presented on this web site is not intended to take the place of your personal physician’s advice and is not intended to diagnose, treat, cure or prevent any disease. Discuss this information with your own physician or healthcare provider to determine what is right for you. All information is intended for your general knowledge only and is not a substitute for medical advice or treatment for specific medical conditions. We cannot and do not give you medical advice. See my privacy policy.

  • Instagram
  • Facebook
  • TikTok

Copyright © 2025 Lara Clevenger

Rate This Recipe

Your vote:




A rating is required
A name is required
An email is required