How to Make Homemade Tomato Sauce (With Fresh Tomatoes)


It’s September, which means that you may be wondering what to do with all of your ripened garden tomatoes. Or you’ve been eyeing those beautiful tomatoes at the farmers market. Tomatoes are in season, which means it’s the perfect time to make Homemade Tomato Sauce with fresh tomatoes.

This is an adapted recipe that’s been passed down throughout my family. My family does have Italian influence with in-laws who immigrated from Italy in the early 60s. They keep their sauce so simple, yet it is very flavorful and a family favorite! 


For this recipe, we keep the skins on the tomatoes and leave the seeds. If your tomatoes are bitter, you can remove the seeds as this will help remove the bitter taste. Our tomatoes are generally quite sweet, so we keep the seeds for our homemade tomato sauce. It’s important to note, that this recipe won’t turn out as good if you’re using generic store bought tomatoes. Store bought tomatoes are typically more watery and less flavorful. 

Wooden Spoon

I am a firm believer in that using a wooden spoon helps with the overall flavor of the tomato sauce. A metal spoon can react with the acidity of the tomatoes, changing the flavor of the sauce. 


You’ll notice that we don’t use much seasoning in this homemade sauce. It isn’t needed! A good homemade tomato sauce is all about the quality of tomatoes. You only really need oil and salt to make a good sauce. If you’re using tomatoes from other than your garden or farmers market, you may need to add additional seasoning.


It is difficult to find the macros of homemade tomato sauce as it will turn out slightly different each time. I calculated the macros a few times for this recipe and it is generally around 96 calories, 17.8g of carbs and 2.6g of Fiber per 1/2 cup serving. Per serving, this sauce is still very low in carbs! If you’re following a ketogenic diet, you’ll want to change your serving size to 1/4 cup to stay under the allowance of 20g net carbs per day. 





Serve this sauce with low carb pasta such as Black Bean Spaghetti or Edamame Pasta. Both options are high in fiber, making them low in carbs. The black bean spaghetti has 11g of Net Carbs while the edamame pasta has a total of 9g Net Carbs per serving. 


How to Make Homemade Tomato Sauce with Fresh Tomatoes

Cook Time 3 hours
Course Side Dish
Cuisine American, Italian
Servings 16
Calories 96 kcal


  • 4 QT Pot
  • Large Wooden Spoon


  • 13 lbs Fresh Tomatoes
  • 1/4 Cup Olive Oil
  • 1 tbsp Salt Add more to taste throughout cooking.
  • 6 Garlic Cloves Whole.
  • Fresh Basil To Taste.


  • Wash and remove the green tops of the tomatoes.
  • Place tomatoes in blender and puree.
  • In a large pot, add all ingredients and stir to combine.
  • Bring to a boil.
  • Let sauce simmer for a minimum of 3 hours until reduced. We usually cook ours for about 5 hours.
  • Continue to check on the sauce and taste throughout. Adjust the seasoning as needed.
  • Once the sauce has reduced by about half and is full of flavor. Enjoy!


Nutrition Information: 16 Servings (1/2 cup per serving) 
  • 96 Calories
  • 17.8g Carbohydrates 
  • 2.6g Fiber
  • 2g Fat
  • 2.6g Protein 
Net Carbs: 15.2g / Serving 


Let me know if you’ve tried this recipe or how you make your homemade tomato sauce! Every family has a different recipe and I’d love to hear yours. Looking for more keto or low carb recipes? Visit my recipe page for more ideas!  



2 thoughts on “How to Make Homemade Tomato Sauce (With Fresh Tomatoes)”

  1. Pingback: Keto Italian Beef Braciole -Instant Pot Method With Prosciutto & Egg!

  2. Pingback: Classic Homemade Keto Marinara Sauce

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