Equipment
* optional
Ingredients
Produce
- 1000 g vine tomatoes, halved
- 4 garlic, peeled
- 15 g fresh basil, loosely packed, torn
Pantry
- 60 ml extra virgin olive oil
- 5 g sea salt
- 2 g black pepper, freshly cracked
- 10 ml balsamic vinegar
- 1 g red pepper flakes
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 190 kcal
- Protein
- 3 g
- Carbohydrates
- 12 g
- Fat
- 16 g
- Fiber
- 5 g
- Sugar
- 10 g
- Sodium
- 499 mg
- Saturated Fat
- 2 g
- Monounsaturated Fat
- 11 g
- Polyunsaturated Fat
- 2 g
- Potassium
- 633 mg
- Calcium
- 45 mg
- Iron
- 1.3 mg
- Magnesium
- 32 mg
- Phosphorus
- 71 mg
- Zinc
- 0.5 mg
- Vitamin A
- 10 mcg
- Vitamin C
- 36 mg
- Vitamin E
- 2.2 mg
- Vitamin K
- 26 mcg
- Vitamin B6
- 0.1 mg
- Thiamin
- 0.01 mg
- Riboflavin
- 0.01 mg
- Niacin
- 0.1 mg
- Folate
- 3 mcg
- Water
- 8 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat your oven to 200°C/400°F. Line a baking sheet with parchment paper.
Place the halved vine tomatoes and peeled garlic cloves onto the prepared baking sheet. Tuck the garlic under the tomatoes slightly to protect them from burning.
Drizzle the extra virgin olive oil evenly over the tomatoes and garlic. Season generously with sea salt, black pepper, and optional red pepper flakes. Toss gently right on the pan to ensure everything is coated.
Roast in the preheated oven for 40 to 45 minutes. The tomatoes should be completely collapsed, blistered on top, and sitting in a pool of their own juices.
Remove from the oven and allow the mixture to cool on the baking sheet for 5 to 10 minutes to ensure safe handling and blending.
Transfer the tomatoes, garlic, and all the pan juices into a blender. Add the fresh basil and optional balsamic vinegar. Blend until smooth, or pulse lightly if you prefer a chunkier, rustic texture.
Chef's Notes
- Do not wash your blender immediately after transferring the sauce to a pot. Swirl half a ladle of hot starchy pasta water inside the blender pitcher to catch the remaining sauce, then pour that liquid gold into your simmering pasta.
- For a deeper, more savory umami profile, try adding a tablespoon of tomato paste to the baking sheet before roasting, smearing it slightly so it caramelizes.
- If you prefer a perfectly smooth, refined sauce with absolutely no seeds or skin fragments, pass the blended sauce through a fine mesh sieve before serving.
- Leaving the skins on the tomatoes not only saves prep time but adds valuable pectin, which helps naturally emulsify and thicken the final sauce.
Storage
Refrigerator: 5 days — Store in an airtight glass container to prevent staining.
Freezer: 3 months — Leave headspace in the container as the sauce will expand when frozen.
Reheating: Gently reheat in a saucepan over medium-low heat until bubbling.
Troubleshooting
Sauce tastes too acidic, flat, or sour
Cause: Tomatoes were out of season, under-ripe, or lacked natural sugars
Fix: Stir in a splash of balsamic vinegar or a small pinch of granulated sugar, then simmer for 2 minutes to integrate
Prevention: Use highly aromatic, bright red, deeply fragrant vine or cherry tomatoes
Garlic tastes bitter and acrid
Cause: Garlic cloves were exposed to direct dry heat and burned in the oven
Fix: Cannot be fixed. Discard burned garlic cloves before blending to save the rest of the sauce
Prevention: Always tuck peeled garlic under the hollows of the tomato halves to steam them in the tomato juices
Cultural Context
Roasting tomatoes is a technique deeply rooted in the philosophy of Italian farmhouse cooking, created to concentrate the flavor of late-summer harvests. This method transforms even average supermarket tomatoes into a robust, umami-rich base that honors the rustic simplicity of traditional Italian cuisine.
