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spaghetti with tomato sauce

Spaghetti with Roasted Tomato Sauce

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  • Author: Caroline Phelps
  • Prep Time: 15 minutes
  • Cook Time: 50 minutes
  • Total Time: 65 minutes
  • Yield: 4 1x
  • Category: Noodles
  • Method: Roasting
  • Cuisine: Italian
  • Diet: Vegetarian


Spaghetti with a sweet and smoky roasted tomato sauce.


Units Scale
  • 14 plum tomatoes, sliced in half
  • 1 pound spaghetti, dry
  • 2 tablespoons extra virgin olive oil
  • 2 cloves garlic, minced
  • 1/2 teaspoon red chili pepper flakes
  • 1 small onion, finely chopped
  • 8 ounces can tomato sauce
  • 2 tablespoons unsalted butter
  • 1 cup pasta water
  • Handful flat leaf parsley, chopped


  1. Preheat the oven to 300ºF.
  2. Put the tomatoes on a sheet pan covered with either aluminum foil or parchment paper.
  3. Spread the tomatoes and roast them in the oven for about 45 minutes, until tomatoes are a little charred, bubbly and soft. Make sure to check on them regularly, flipping them over or tossing them around to prevent from sticking to the foil or paper.
  4. Bring a pot of salted water to boil.
  5. Cook your spaghetti and reserve about a cup of the salted water aside. Drain your spaghetti but do not rinse it.
  6. In a medium size pot, add the olive oil, garlic, red chili pepper flakes and onions and cook on medium heat for 4 minutes.
  7. Add the roasted tomatoes and tomato sauce and cook for 3 minutes.
  8. Turn the heat off and transfer the ingredients to a blender. Add the butter and puree into a smooth sauce.
  9. The sauce can be served as is or you can water down the consistency by adding a little pasta water to it and blending again.
  10. Serve the spaghetti with fresh parsley on top.


Save the roasted tomato sauce in a storage container and refrigerate for up to 8 days.


  • Serving Size: 1 serving
  • Calories: 595
  • Sugar: 11.7g
  • Sodium: 26.8mg
  • Fat: 15.2g
  • Saturated Fat: 5g
  • Unsaturated Fat: 1.9g
  • Trans Fat: 0g
  • Carbohydrates: 98.6g
  • Fiber: 7.5g
  • Protein: 7.8g
  • Cholesterol: 15.2mg
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