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    Home » Recipes » Vegetarian

    Roasted Red Pepper Sauce

    Published: Dec 10, 2025 by Nicole Addison · This post may contain affiliate links · 1 Comment

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    The creamiest roasted red pepper sauce packed with hidden veggies...and all without any nuts! THIS is what dreams are made of.

    Imagine it's a cozy night in. You just opened a bottle of wine, you have your favourite music playing and a bowl of creamy vegan red pepper pasta is waiting for you. This sauce is seriously one of the most amazing things I've made. I swear I'm not exaggerating it tastes amazing but it's also healthy. It's creamy, it's vegan, it's packed with veggies and you need it ASAP.

    Close up of red pepper sauce with pasta in a small bowl

    When I was younger I used to be a VERY picky child. Pasta was pretty much the only food I would eat until I was 10. But honestly I think I was on to something. What's not to love about pasta? Want an easy dinner? Make a bowl of pasta with tomato sauce. Want a fancy date night meal? Make a homemade sauce. Want a food to comfort you after a hard week? A bowl of creamy pasta is there for you. PASTA can do it all.

    Some pasta sauces can be so heavy though and as much as I love past sometimes you just want a lighter version. Introducing: this creamy vegan roasted red pepper sauce. It's made from a base of roasted red peppers and sun dried tomatoes mixed with non-dairy milk and some spices for extra flavour. So you get all the same great thick creaminess we love about a good pasta sauce but there is no heavy cream. Oh and it also only takes less than an hour to make from start to finish. Now that's a win in my books.

    Looking for your next date-night meal to wow your loved ones? this is IT. Don't believe me? Try it for yourself.

    Why This Recipe Is Dietitian Approved

    1. Plant-based. You get that classic creamy pasta feel using all plant-based ingredients, with no heavy cream needed.
    2. Hidden veggies. A great way to sneak in some veggies for picky eaters!
    3. Easy to customize. Use any pasta you love and add extra protein or fiber by choosing whole-wheat or chickpea pasta.

    Roasted Red Pepper Sauce Recipe

    Ingredients

    Ingredients for roasted red bell pepper sauce including bell peppers, onion, garlic, milk of choice, tomato paste, spices and nutritional yeast

    Red Bell Peppers. These are the base of the sauce! Roast them until soft and lightly charred, then blend until smooth. I love roasting my own because it feels extra satisfying to make a recipe fully from scratch, but jarred roasted peppers work just as well. Just drain any excess oil before blending. If using jarred peppers, you can skip roasting the garlic and add it straight into the food processor.

    Sun-Dried Tomatoes. Sun-dried tomatoes add depth, saltiness and a rich roasted flavour. They're one of my favourite ingredients to add to sauces because they instantly make everything taste more elevated.

    Nutritional Yeast. A vegan-friendly flavour booster packed with B vitamins, including plant-based B12. It gives the sauce a subtle cheesy, nutty vibe. If you're not vegan, parmesan works as a substitute!

    Cornstarch. The simple secret to getting that perfectly thick, creamy sauce. If you don't have cornstarch or need an alternative, arrowroot starch or another sauce thickener will work just fine.

    Milk. Any unsweetened, unflavoured milk works: oat, almond, soy or dairy. Just make sure it's unsweetened so the sauce doesn't accidentally taste like dessert.

    Basil. I usually use dried basil because it's affordable and always in my pantry, but if you're going for more of an Italian-style flavour, fresh basil is amazing. About ¼ bunch, chopped, is perfect.

    Pasta. Use your favourite pasta shape! Chickpea or whole-wheat pasta is a great option if you want to add extra protein and fibre.

    The complete ingredient list with measurements can be found in the recipe card below. 

    Instructions

    1. Preheat oven to 400°F.
    Bell peppers sliced on a baking tray with garlic
    1. On a large baking sheet place peppers and garlic and drizzle with olive oil . Place the tray in the oven and bake for 30 minutes.
    Sauce blended in a high-powered blender
    1. Once peppers and garlic is roasted, combine remaining sauce ingredients (everything except the pasta!) in a food processor or high powered blender and blend until smooth.
    Red pepper sauce added to a pan
    1. Once blended, pour sauce into a saucepan and heat oven low-medium heat , stirring frequently until the sauce begins to thicken.
    Birdseye shot of red pepper pasta in a bowl
    1. Prepare your favourite pasta according to package instructions. Once pasta is done cooking , drain remaining water and add sauce to pan. Stir to combine.
    2. Top with your choice of vegan cheese or fresh basil!

    Substitutions and Variations

    To make gluten-free: cornstarch is not gluten free however you can easily substitute with arrowroot starch if desired! Be sure to pair the sauce with a gluten free pasta of choice.

    To make vegan: this pasta sauce is vegan as written!

    To make nut-free: this sauce is nut free!

    I recommend pairing this sauce with pasta of choice, a protein  and vegetables such as broccoli or a side salad!

    Equipment

    • High-powered blender

    Storage

    This roasted red pepper sauce can be stored in an airtight container for up to 5 days in the fridge. 

    For longer storage: you may divide the sauce amongst airtight containers and freeze. When you are ready to use- defrost in the fridge overnight before heating!

    Top Tips for Success

    If you're short on time, use jarred roasted red peppers instead of roasting your own. Just drain the excess oil and skip roasting the garlic- it still tastes amazing!

    Frequently Asked Questions

    Can I add more veggies to the sauce?

    Absolutely! You can add in veggies you have on hand (think zucchini, carrots, cauliflower)!

    Red pepper sauce in a jar

    More Vegan Recipes:

    If you liked this roasted red pepper sauce, try these recipes:

    • 10-Minute Easy Tofu Alfredo
    • Vegan Pasta Bake
    • Easy Vegan Curry

    See you in the kitchen!

    PS. I love seeing my recipes in action! If you decide to make this roasted red pepper sauce, don't forget to snap a photo and tag me on Instagram- @nourishedbynic or leave a comment and rating below letting me know how you liked it!

    📖 Recipe

    Close up of red pepper sauce with pasta in a small bowl
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    5 from 1 vote

    Roasted Red Pepper Sauce

    The creamiest roasted red pepper sauce packed with hidden veggies...and all without any nuts! THIS is what dreams are made of.
    Prep Time20 minutes mins
    Cook Time30 minutes mins
    Total Time50 minutes mins
    Course: Main Course
    Servings: 6 people

    Ingredients 

    • 2 red bell peppers Sliced in half lengthwise, seeds and stem removed
    • 1 tablespoon olive oil
    • 3 cloves garlic smashed (not minced)
    • ½ of one medium yellow onions diced
    • ¼ cup sun-dried tomatoes
    • 1 cup milk of choice
    • 1 tablespoon cornstarch *can sub with arrowroot starch
    • 2 tablespoon nutritional yeast
    • 1 tablespoon dried basil
    • ½ cup low sodium vegetable broth
    • salt and pepper to taste
    • red pepper flakes optional for spice
    • 4 cups uncooked pasta

    Instructions

    • Preheat oven to 400°F.
    • On a large baking sheet place peppers and garlic and drizzle with olive oil . Place the tray in the oven and bake for 30 minutes.
    • Once peppers and garlic is roasted, combine remaining sauce ingredients (everything except the pasta!) in a food processor or high powered blender and blend until smooth.
    • Once blended, pour sauce into a saucepan and heat oven low-medium heat , stirring frequently until the sauce begins to thicken.
    • Prepare your favourite pasta according to package instructions. Once pasta is done cooking , drain remaining water and add sauce to pan. Stir to combine.
    • Top with your choice of vegan cheese or fresh basil!

    Notes

    *I have included an estimation of the nutrition information for this recipe below. However, always remember a recipe is so much more than just nutritional content and these numbers do not need to dictate your food choices. Please don't forget that both your body and soul need nourishment! The owner of this website is not liable for this estimation.

    Nutrition

    Serving: 0.33cup | Calories: 235kcal | Carbohydrates: 40g | Protein: 9g | Fat: 5g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Cholesterol: 5mg | Sodium: 25mg | Potassium: 465mg | Fiber: 4g | Sugar: 7g | Vitamin A: 1353IU | Vitamin C: 53mg | Calcium: 84mg | Iron: 2mg
    Did you know....rating and sharing recipes is one of the best ways you can support your favourite food bloggers? If you make this recipe, I would love if you clicked the stars below to leave a rating and/or sharing a photo on social media by tagging @nourishedbynic or using the hashtag #nourishedbynic!

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    Comments

    1. Nimue says

      September 10, 2024 at 12:57 am

      5 stars
      This was really good!! I used thyme and oregano bc no basil on hand, and I topped with oyster mushrooms that I had sautéed in the sun dried tomato oil. Gosh this was really good. I would say I used 1C less pasta to sauce ratio for a creamier pasta .

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    Nicole Addison, RD

    Hi I'm Nicole!

    I’m a Registered Dietitian, recipe developer and content creator on a mission to help individuals rediscover the joys of cooking with easy, accessible, healthy recipes.

    On my page you'll find yummy recipes, wellness tips, and even some of my favourite travel and lifestyle recommendations!

    More about me →

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