Slow-Simmered Italian Tomato & Herb Sauce with Heirloom Tomatoes

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A true Italian nonna-style sauce made with slow-cooked heirloom tomatoes, garlic, and basil, embodying the essence of authentic Italian cooking. This italian-inspired pasta ready in about 85 minutes blends heirloom tomatoes, garlic, extra-virgin olive oil into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 110 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 70 min Serves 4 Italian cuisine 110 cal/serving
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Ingredients

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Instructions

  1. Step 1: Heat olive oil in a deep saucepan over medium-low heat. Add minced garlic and cook for 1 minute until fragrant but not browned.
  2. Step 2: Stir in diced tomatoes, wine, salt, and pepper. Bring to a gentle simmer, then reduce heat to low and cover partially.
  3. Step 3: Simmer uncovered for 1 hour, stirring occasionally, until tomatoes break down and sauce thickens to coat the back of a spoon.
  4. Step 4: Stir in half the basil, then remove from heat. Let sit for 10 minutes before stirring in remaining basil for vibrant color and aroma.

Frequently asked questions

How long does Slow-Simmered Italian Tomato & Herb Sauce with Heirloom Tomatoes take to make?

Total time is about 85 minutes (15 min prep + 70 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Slow-Simmered Italian Tomato & Herb Sauce with Heirloom Tomatoes?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Slow-Simmered Italian Tomato & Herb Sauce with Heirloom Tomatoes?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Slow-Simmered Italian Tomato & Herb Sauce with Heirloom Tomatoes for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Slow-Simmered Italian Tomato & Herb Sauce with Heirloom Tomatoes?

Italian pasta like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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