Slow-Simmered San Marzano Tomato Basil Sauce
A deeply flavorful, restaurant-quality tomato sauce that requires patience to develop its rich, complex taste, embodying the essence of serious cooking. This italian-inspired pasta ready in about 105 minutes blends extra-virgin olive oil, medium, finely diced red onion, minced garlic 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 120 calories and feeds 6, 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.
Ingredients
- 3 tbsp extra-virgin olive oil
- 1 medium, finely diced red onion
- 4 cloves, minced garlic
- 28 oz (1 can, whole peeled) San Marzano tomatoes
- 1/4 cup, chopped fresh basil
- 1 tsp dried oregano
- 1/2 tsp sea salt
- 1/4 tsp black pepper
- 1 tbsp red wine vinegar
Instructions
- Step 1: Heat 3 tbsp extra-virgin olive oil in a large saucepan over medium-low heat. Add 1 medium finely diced red onion and cook for 8-10 minutes until translucent and golden, stirring occasionally to prevent burning.
- Step 2: Add 4 minced garlic cloves and cook for 1 minute until fragrant, stirring constantly to avoid browning.
- Step 3: Pour in 28 oz whole peeled San Marzano tomatoes (crushing them with a wooden spoon), then add 1/4 cup chopped fresh basil, 1 tsp dried oregano, 1/2 tsp sea salt, and 1/4 tsp black pepper. Stir to combine and bring to a gentle simmer.
- Step 4: Reduce heat to low, partially cover, and simmer for 90 minutes, stirring every 15 minutes until the sauce thickens and coats the back of a spoon, then stir in 1 tbsp red wine vinegar to brighten the flavor.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Slow-Simmered San Marzano Tomato Basil Sauce take to make?
Total time is about 105 minutes (15 min prep + 90 min cook). A small batch typically covers several meals in the week — store as the recipe directs.
How do I store leftover Slow-Simmered San Marzano Tomato Basil Sauce?
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 San Marzano Tomato Basil Sauce?
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 San Marzano Tomato Basil Sauce for a different number of people?
The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). 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 San Marzano Tomato Basil Sauce?
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.
What others are saying
- ★★★★★
Made with what I had on hand and it still came out great.
- ★★★★☆
Tasty recipe. I'd add a bit more seasoning next time.
- ★★★☆☆
It was fine. Came out a bit bland for my taste.
