No-Sugar Marinara

A simple, slow-simmered tomato sauce with garlic, olive oil and basil — balanced with a knob of butter instead of added sugar.

  • Net carbs2.3 g
  • Prep10 min
  • Cook35 min
  • Serves9
✓ Vegetarian✓ Gluten-free✓ Egg-free✓ Nut-free
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Nutrition per serving

⅓ cup
Net carbs
2.3g
Calories
69kcal
Protein
0.9g
Fat
6g
Total carbs
4.2 g
Fiber
1.9 g
81% fat 14% carbs

Calculated from USDA FoodData Central values for each ingredient (optional ingredients excluded). Brands vary — check your labels if you track closely.

A low-carb swap for: marinara sauce (jarred) (7.4 g net per ½ cup) . This recipe has 2.3 g per serving.

Ingredients

9 servings
Version

Estimated cost $4.30 for 9 servings ($0.48 each) · how we estimate

Instructions

  1. Pour the tomatoes into a bowl and crush them with your hands (or a potato masher) into rough, bite-size pieces.

  2. Warm the olive oil in a wide saucepan over medium-low heat. Add the onion and cook 4–5 minutes until soft and translucent, then add the garlic and red pepper flakes and cook 1 minute more, until fragrant but not browned.

  3. Add the tomatoes and their juices, the oregano and salt. Bring to a simmer, then lower the heat and cook uncovered for 25–30 minutes, stirring now and then, until thickened and the oil begins to pool at the edges.

  4. Stir in the butter and torn basil. Taste and adjust the seasoning. Leave chunky, or blend smooth with an immersion blender.

Tips for success

  • Many jarred sauces add sugar to tame acidity; here slow simmering and a little butter do the job instead.
  • Read labels: the best canned tomatoes list only tomatoes, tomato juice or purée, and salt. San Marzano-style tomatoes are naturally sweeter.
  • Use it with meatballs, zucchini lasagna, eggplant Parmesan or on a fathead pizza.

Nice to have, not needed

  • An immersion blender makes a smooth sauce right in the pot — leave it chunky if you don’t have one.

Storage & meal prepMeal-prep friendly

  • Keeps 5 days in the fridge
  • Freezes up to 3 months

Reheat: Simmer gently on the stove, or microwave covered, stirring halfway.

Prep tip: Double the batch and freeze 1-cup portions flat in freezer bags; they stack neatly and thaw in minutes.

Refrigerate up to 5 days or freeze up to 3 months.

Variations

3 variations, each with its own ingredients and macros

Puttanesca

Flavor

The salty, punchy Neapolitan sauce, made by melting anchovies into the oil and adding olives and capers. It needs no added sugar at all.

  • + 3 anchovy fillets
  • + 15 Kalamata olives
  • + 2 tbsp capers

2.6 g net · 80 kcal · 1.4 g protein · 6.8 g fat · ≈$0.70 per serving (+0.3 g net carbs vs the original)

Meat sauce

Protein

A pound of browned ground beef simmered right in the sauce for a hearty, Bolognese-style sauce. Each serving is closer to ½ cup.

  • + 1 lb ground beef (80/20)

2.3 g net · 198 kcal · 9.6 g protein · 16 g fat · ≈$1.24 per serving (same net carbs as the original)

Creamy vodka sauce

Flavor

A splash of vodka and some cream turn the marinara into a silky, blush-pink vodka sauce.

  • + 2 tbsp vodka
  • + ½ cup heavy cream

2.7 g net · 122 kcal · 1.3 g protein · 11 g fat · ≈$0.65 per serving (+0.4 g net carbs vs the original)

No-Sugar Marinara — pin image

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