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    Home » Recipes » Dinner

    Roast Tomato & Red Pepper Pasta Sauce

    Published: October 31, 2025 by Andrea · This post may contain affiliate links. Please read the disclosures and disclaimers page for details.

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    This recipe makes a delicious roast tomato pasta sauce that is made with fresh cherry tomatoes and can be used to compliment any pasta dish. The sauce is slightly sweet, tangy and adds a burst of flavour to any pasta dish.

    tomato pasta sauce

    If you need a tomato sauce to add to your pasta then you must try this easy pasta sauce. The sauce is full of fresh tomatoes and herbs such as oregano and basil which give the sauce the best flavour.

    Roasting the tomatoes transforms them from sharp and acidic to sweet, rich, caramelised and slightly smoky. It also saves time in cooking. Instead of simmering sauce for hours, roasting does the work for you in about 40 - 50 minutes.

    This roasted tomato pasta sauce is simple, fresh and full of flavour, making it perfect for an easy weeknight dinner or a comforting weekend meal. The sauce is so easy to make and perfect for making ahead of time. Once you try roast tomato pasta sauce, you may never go back to jarred sauce again.

    pasta sauce

    Ingredients for Roast Tomato & Red Pepper Pasta Sauce

    Please find the full list of ingredients and quantities in the recipe card at the end of the post. 

    • Tomatoes - I use fresh cherry tomatoes for this pasta sauce recipe.
    • Pepper - use red bell peppers.
    • Garlic - use a large fresh garlic.
    • Onion - use red onions for this recipe.
    • Oil - I use extra virgin olive oil.
    • Seasoning - season with salt, black pepper and dried oregano.
    • Sugar - I use soft brown sugar to make the sauce slightly sweet and to help caramelise the vegetables.
    • Tomato purée - use double concentrated tomato purée.
    • Lemon juice - from a fresh lemon.
    • Basil - use fresh or dried basil to finish the sauce.
    tomatoes in roasting pan
    roasted tomatoes

    How to Make Roast Tomato & Red Pepper Pasta Sauce

    1. Preheat the oven to gas mark 6/400oF/200oC/180oC fan. Place the tomatoes, garlic and onions on a baking tray. Drizzle with olive oil, sprinkle with salt, black pepper, oregano and sugar. Roast for 40 - 50 minutes until soft, caramelised and slightly charred at the edges.

    2. Allow to slightly cool then squeeze the garlic from their skins into a blender or food processor. Add the roasted tomatoes, red peppers, onion and any juice from the vegetables then blitz for a couple of seconds until smooth but slightly chunky. Blend for longer if you prefer the sauce smoother.

    3. Pour the sauce into a pan, stir in the tomato purée and add the basil. Heat gently for 5 - 6 minutes, stirring often. Mix into cooked pasta and serve with some Parmesan. 

    Recipe Tips

    • This recipe makes around 950ml of tomato pasta sauce.

    Nutrition

    Nutrition based on 1 serving - Calories: 88kcal | Fat: 4.2g | Saturates: 0.7g | Carbs: 10.4g | Sugar: 8.4g | Fibre: 3.2g | Protein: 2.8g | Salt: 0.65g.

    Storage

    This sauce can be cooled and stored in the refrigerator for 3 – 4 days. It can also be stored in the freezer for up to 2 months.

    roast tomato pasta sauce

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    Print Recipe Pin Recipe

    Roast Tomato & Red Pepper Pasta Sauce

    This recipe makes a delicious roast tomato pasta sauce that is made with fresh cherry tomatoes and can be used to compliment any pasta dish.
    Prep Time5 minutes mins
    Cook Time45 minutes mins
    Total Time50 minutes mins
    Yield: 8 servings
    Calories: 88kcal

    Ingredients

    • 900g fresh cherry tomatoes
    • 2 large red bell peppers cut in quarters
    • 1 large garlic head sliced at the top and left whole and unpeeled
    • 2 small red onion peeled and cut into quarters
    • 2 tablespoon olive oil
    • 1 teaspoon salt
    • ½ teaspoon black pepper
    • 1 teaspoon oregano dried
    • 1 teaspoon soft brown sugar
    • 3 tablespoon tomato puree
    • 1 tablespoon lemon juice
    • 1 tablespoon basil dried or fresh

    Instructions

    • Preheat the oven to gas mark 6/400oF/200oC/180oC fan. Place the tomatoes, garlic and onions on a baking tray. Drizzle with olive oil, sprinkle with salt, black pepper, oregano and sugar. Roast for 40 - 50 minutes until soft, caramelised and slightly charred at the edges.
    • Allow to slightly cool then squeeze the garlic from their skins into a blender or food processor. Add the roasted tomatoes, red peppers, onion and any juice from the vegetables then blitz for a couple of seconds until smooth but slightly chunky. Blend for longer if you prefer the sauce smoother.
    • Pour the sauce into a pan, stir in the tomato purée and add the basil. Heat gently for 5 - 6 minutes, stirring often. Mix into cooked pasta and serve with some Parmesan. 

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    Hi I’m Andrea and I am the writer and food photographer behind Andrea’s Dainty Kitchen. I share a selection of recipes and provide step by step instructions to help readers get the best results from their time in the kitchen.

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