Equipment
Ingredients
Slow-Roasted Tomato Sauce
- 800 g canned whole peeled plum tomatoes
- 60 ml extra-virgin olive oil
- 6 garlic, thinly sliced
- 2 g crushed red pepper flakes
- 2 g dried oregano
- 5 g fine sea salt
- 4 g granulated sugar
- 1 g black pepper, freshly cracked
- 15 g fresh basil, leaves torn
Pasta and Assembly
- 340 g dry rigatoni pasta
- 3000 ml water
- 20 g fine sea salt
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 489 kcal
- Protein
- 13 g
- Carbohydrates
- 75 g
- Fat
- 16 g
- Fiber
- 5 g
- Sugar
- 8 g
- Zinc
- 1.6 mg
Sources: Aggregated Public Data, USDA FoodData Central
Method
Preheat the oven to 160°C (325°F) with the oven rack positioned in the center.
Pour the canned whole peeled plum tomatoes with their juices into the baking dish and crush them gently by hand into rustic, bite-sized pieces.
Add the extra-virgin olive oil, thinly sliced garlic, crushed red pepper flakes, dried oregano, granulated sugar, black pepper, and 5 g fine sea salt to the baking dish, then stir with a wooden spoon until thoroughly combined.
Place the baking dish into the oven and roast at 160°C (325°F) for 75 minutes, stirring once halfway through, until the tomatoes are reduced, jammy, and caramelized around the edges.
Bring 3000 ml of water and 20 g of fine sea salt to a rolling boil over high heat in the large pot.
Add the dry rigatoni pasta to the boiling water and cook uncovered for 10 minutes, stirring occasionally with a wooden spoon, until al dente.
Carefully scoop out 120 ml of the starchy pasta cooking water from the large pot using a heatproof measuring cup, then pour the remaining pasta into a colander to drain.
Transfer the drained pasta back into the warm large pot, scrape in all the roasted tomato sauce from the baking dish, and add 60 ml of the reserved pasta cooking water.
Cook the mixture over medium heat for 2 minutes, stirring constantly with a wooden spoon to emulsify the olive oil and pasta starch, adding more reserved pasta water 15 ml at a time if the sauce appears dry.
Remove the pot from heat, fold in the torn fresh basil leaves with the wooden spoon, and taste to adjust seasoning if necessary.
Divide the dressed pasta and rich slow-roasted tomato sauce among four warm serving bowls using tongs, and serve immediately.
Chef's Notes
- Slow roasting canned tomatoes mimics the complex sweetness of sun-dried fruit without dehydrating them completely, driving off harsh moisture while intensifying natural glutamates.
- Do not drain off the canning liquid before roasting; as the tomato water cooks down, its dissolved pectins and sugars caramelize into fond on the bottom of the dish.
- Finishing the boiled pasta directly inside the hot sauce with a splash of starchy cooking water creates a stable emulsion between water and oil, yielding a restaurant-style silky glaze.
- Bronze-die cut pasta shapes like rigatoni or paccheri have a coarse, floury exterior texture that binds significantly better to slow-roasted sauces than smooth teflon-extruded pasta.
Storage
Refrigerator: 4 days — Cool and store leftovers in an airtight container within 2 hours of cooking.
Freezer: 3 months — Freeze the slow-roasted sauce separately from pasta in a freezer-safe container for best texture.
Reheating: Reheat refrigerated leftovers in a saucepan over medium-low heat, stirring frequently and adding 15 ml to 30 ml of water if needed, until steaming hot and reaching a minimum internal temperature of 74°C (165°F) measured with a food thermometer.
Troubleshooting
The tomato sauce tastes overly acidic and harsh
Cause: Certain canned tomato brands contain added citric acid or use unripe harvest fruit
Fix: Stir in an additional 2 g to 4 g of granulated sugar or 15 ml of extra-virgin olive oil into the warm sauce
Prevention: Choose canned whole peeled plum tomatoes packed solely in tomato juice without added citric acid
The edges of the tomatoes charred or blackened during roasting
Cause: Oven hot spots or tomatoes spread too thinly against the baking dish perimeter
Fix: Use a spoon to lift away and discard any bitter black fragments before folding sauce into pasta
Prevention: Ensure the tomatoes sit in an even layer and stir halfway through the roasting cycle
Sauce remains watery and slips off the pasta noodles
Cause: Too much reserved pasta water was added or the mixture was not agitated over active heat to emulsify
Fix: Simmer the pasta and sauce mixture over medium heat for an additional 1 to 2 minutes while stirring constantly until excess moisture evaporates and starch thickens
Prevention: Add reserved pasta water in small increments and stir vigorously over medium heat
Cultural Context
In southern Italian culinary tradition, home cooks bake summer tomatoes in terracotta dishes alongside local olive oil, garlic, and wild herbs to create sweet, concentrated confits known as pomodori al forno. This recipe adapts that heritage technique to canned whole peeled tomatoes, allowing cooks outside Italy or outside the harvest season to capture intense midsummer brightness from humble pantry goods. Paired with hearty durum wheat pasta, it honors the Italian ethos of transforming simple, affordable ingredients into a luxurious meal through patient heat application.
