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Roasted Red Pepper Sauce

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This Roasted Red Pepper Sauce is so delicious and easy to make! I use it with my Nachos recipe, but it can also be served on baked potatoes, rice or pasta. Since I don’t use nutritional yeast (see Notes), I wanted to create a flavorful, colorful cheesy sauce that could take the place of common vegan cheese sauces. Enjoy!

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Roasted Red Pepper Sauce


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  • Author: StraightUpFood.com
  • Total Time: 40 minutes
  • Yield: makes 1.75 cups 1x
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Ingredients

Scale
  • ½ cup water
  • ½ cup (2 ounces) raw, unsalted cashews (or see Notes)
  • 1 medium red bell pepper, halved and seeded
  • ½ medium red onion, cut in half again
  • 4 medium garlic cloves, peeled
  • ¼ teaspoon chipotle powder

Instructions

  1. Place the cashews and water into a blender, and blend for 10 seconds. Let sit so the nuts can soften. Preheat the oven to 400F.
  2. Line a baking pan or sheet with parchment paper (or use a silicone mat). Place the two pieces of red onion on the pan as well as the bell pepper halves cut side down. Place two garlic cloves under each pepper half. Roast for 25 to 30 minutes (on the center oven rack), or until the bell peppers start to wrinkle and brown (see photo).
  3. Add the roasted bell pepper halves, red onion pieces, and garlic cloves to the blender of cashews and water; also add the chipotle powder. Blend until smooth. Add a little water as needed to thin. Reheat the sauce in a small saucepan if desired.

Equipment

Breville Smart Oven Air Fryer Toaster Oven

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Parchment Baking Paper

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Vitamix

Vitamix 5200 Blender

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Notes

Cashew substitutes: Cashews are my favorite fat source for creamy sauces, but if you can’t eat them, use another nut or seed. Cooked white potatoes, like Yukon Gold, may work too, but the sauce would not be as rich since potatoes are much lower in fat than nuts/seeds. I did try this recipe with tofu, and it works just fine. In both cases, tofu and potatoes, just add the water gradually in step 3 while blending (not in step 1), otherwise your sauce will be too thin (since tofu and cooked potatoes have water in them already and cashews do not).

Chipotle powder is made from dried, smoked, jalapeño peppers, and as Google so aptly states, “They are then crushed into powder form, in pure, simplistic flavor glory.” I don’t eat fresh jalapeños (too hot for me) but I love chipotle powder; the key is not to use too much, which is why I went with ¼ teaspoon (use more or less if you wish; or for a very mild flavor, use “mild” chili powder).

Red onion: I used a yellow onion the first time I made this and the color was a bright, unnatural orange, so I opted for a red onion instead to get a more authentic cheesier color. But white, yellow or red can be used.

In the air-fryer: I also made this in my Breville Air Frier, and found the following settings to work well: set dial to "Roast" and preheat to 400F. Once the oven is up to temperature, place the baking pan with veggies on it on the "Roast" lower rack, and roast for 20 minutes. Toward the end, I like to keep an eye on it so as not to over-do it.

Nutritional yeast: Nutritional yeast is a dry, yellow, flakey condiment often used in vegan cheese sauces, since it has a somewhat cheesy flavor. I don’t use it though (and TrueNorth, where I teach, also does not) because most brands can be problematic health-wise. Most (1) are genetically modified; (2) contain either added or naturally occurring MSG (monosodium glutamate), which many people have physical reactions to; and (3) are fortified with “folic acid,” which is a synthetic form of vitamin B9, and is not as effectively utilized by the body as “folate,” the natural form of B9. Dietary folate—the form found in whole foods—is preferable to the synthetic folic acid found in supplements and processed foods. Having said all that, if you still want nutritional yeast, consider buying it from Well Your World. They make one that is non-fortified, non-GMO, non-irradiated, and non-ETO (ETO means that it hasn't been sterilized with ethylene oxide, a gas that kills fungus and bacteria. The gas is a carcinogen, but the EPA says that in tiny amounts it is safe—yikes!).

  • Prep Time: 10 minutes
  • Cook Time: 30 minutes

Nutrition

  • Serving Size: ¼ cup (recipe makes 7 servings)
  • Calories: 59
  • Sugar: 1 g
  • Sodium: 2 mg
  • Fat: 4 g
  • Saturated Fat: 1 g
  • Carbohydrates: 5 g
  • Fiber: 1 g
  • Protein: 2 g
  • Cholesterol: 0 mg

Did you make this recipe?

Tag @straightupfood and hashtag it #straightupfood - we can’t wait to see what you’ve made!

Above: For step 2, the baking pan is lined with parchment paper. You can't see the garlic cloves, but they are under the bell pepper halves.
Above: After step 2, this is what the roasted veggies look like. You don't have to roast yours as long, so that they get charred (a little charring is fine, burning is not), but the more roasted they are, the deeper the smoky-roasty flavor will be.
« Sweet & Spicy Chickpea Stew
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Comments

  1. David Peterzell

    May 05, 2023 at 1:01 am

    Roasted Red Pepper Sauce. The Best!!!!!!! A++

    Reply
    • Cathy

      May 05, 2023 at 9:38 am

      Yay! 😉 Thanks Dave!

      Reply
  2. Paulette

    May 05, 2023 at 8:51 am

    Did you take off the peel from the roasted red pepper?

    Reply
    • Cathy

      May 05, 2023 at 9:38 am

      No I didn't. But if you didn't want the dark parts, you could cut them out. I think they add flavor. 🙂

      Reply
  3. Valerie

    May 09, 2023 at 12:04 pm

    I used this sauce for the Nachos recipe that you posted. Excellent!

    There was some leftover from preparing the nachos, and I used it as a tasty salad dressing. I may prepare it in the future for the purpose of a salad dressing.

    Reply
    • Cathy

      May 11, 2023 at 5:06 pm

      Oh, great idea! 😉

      Reply
  4. Carol

    July 20, 2023 at 8:27 am

    Does this sauce do well with freezing?? Thanks

    Reply
    • Cathy

      July 21, 2023 at 10:37 am

      Yes! 🙂

      Reply
  5. Brett Torrey Haynes

    November 20, 2023 at 2:24 pm

    Thanks for the insights on nutritional yeast and a link to a better version. I don't eat much of it on my mostly raw-food WFPB diet, but it's good to know the facts.

    Reply
    • Cathy

      November 21, 2023 at 9:04 am

      Sure! Thanks Brett! 🙂

      Reply
  6. Stephanie

    February 20, 2024 at 6:07 am

    Cathy is an amazing person who has fabulous resources and a fantastic website. Her website and store is filled with tremendous knowledge that she shares so we can eat for health while still being delicious.

    Reply
  7. Karen

    June 02, 2024 at 10:25 am

    Discovered this recipe and technique for roasting the peppers, garlic, and onion. Now using it in every way I can think of - hummus, mac & cheeze, and as a sauce on anything. Fabulous!

    Reply
    • Cathy

      June 03, 2024 at 9:09 am

      Yay! 🙂 Thanks Karen!

      Reply

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