This is a blended red pepper soup — roasted bell peppers, caramelized onion and garlic, smoked paprika, and cashew butter for creaminess, all puréed smooth. It takes about an hour start to finish and makes four bowls. The honest reason to make it: it tastes like you spent more money and effort than you did.
Why this recipe works
Two things carry this soup. First, actually charring the peppers — not just roasting them until soft, but letting the skins blister and blacken. That char is where the smoky flavor comes from; the smoked paprika reinforces it, but it can’t replace it. Second, cashew butter blended into the base gives the soup body without thinning the flavor the way plant-based cream sometimes does. It also emulsifies cleanly, so you get a smooth, cohesive texture rather than something that separates in the bowl. Those two steps — real char, cashew butter — are what separate this from a basic vegetable purée.
If something goes sideways
- Soup tastes flat or thin after blending: Add a small splash of red wine vinegar and a pinch more salt, then blend again for ten seconds. Acid wakes up the pepper flavor more reliably than adding more paprika.
- Texture is grainy instead of silky: The cashew butter didn’t fully incorporate. Return the soup to the blender and run it on high for a full 60 seconds — most home blenders need longer than you’d expect. If it’s still grainy, strain through a fine mesh sieve.
- Soup is too thick after blending: Stir in warm vegetable broth a quarter-cup at a time until it moves the way you want. Cold broth can make it seize slightly, so warm it first.
- Peppers didn’t char properly under the broiler: Skip the garnish — not worth the extra dish. Instead, stir in an extra half-teaspoon of smoked paprika and a few drops of liquid smoke if you have it. The soup will still be good.
- Soup is bitter: Over-charred pepper skins got into the blend. Next time, steam the peppers in a covered bowl after roasting and peel them more thoroughly. For this batch, a teaspoon of maple syrup stirred in at the end will balance it out.
Keeping and reheating
Refrigerate leftovers in a sealed container for up to five days. The soup thickens considerably as it cools because of the cashew butter, so add a splash of broth or water when reheating and stir well — it comes back together quickly over medium-low heat. For freezing, let it cool completely, then store in freezer-safe containers for up to three months. Freeze in single-serving portions if you want easy weeknight meals. Thaw overnight in the fridge or in a pot over low heat from frozen, stirring occasionally. Don’t microwave it straight from frozen; the texture gets uneven.
Vegan Roasted Red Pepper Soup
Equipment
- 1 Blender (high-speed preferred)
- 1 Large soup pot or Dutch oven
- 1 Baking sheet
- 1 Parchment paper
- 1 Wooden spoon
Ingredients
- 4 large red bell peppers organic preferred; halved and seeds removed
- 1 tablespoon olive oil extra virgin
- 1 medium-sized yellow onion diced finely
- 3 cloves garlic minced
- 2 teaspoons smoked paprika
- 1 teaspoon sea salt or to taste
- ¼ teaspoon black pepper freshly ground
- 3 cups vegetable broth low-sodium preferred
- 2 tablespoons cashew butter unsweetened, creamy; for richness
- 2 teaspoons red wine vinegar or apple cider vinegar
Instructions
- Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper. Place halved red bell peppers cut-side down and roast for 25–30 minutes until skins are blistered and starting to blacken slightly. Remove and cover with foil for 10 minutes to steam (this makes peeling easier). Peel and roughly chop once cooled slightly.
- In a large soup pot, heat olive oil over medium heat. Add diced onion and sauté for 6–8 minutes until translucent and lightly caramelized. Add minced garlic and cook for 1 more minute until fragrant.
- Stir in smoked paprika, sea salt, and black pepper. Cook for 30 seconds to bloom the spices.
- Add the peeled, roasted peppers and vegetable broth. Bring to a gentle boil, then reduce heat and simmer uncovered for 10–15 minutes.
- Stir in cashew butter and vinegar. Use an immersion blender directly in the pot or transfer to a high-speed blender to puree until smooth and velvety. Return to pot and adjust seasoning if needed.
- Simmer an additional 5 minutes to develop flavor. Serve warm and garnish as desired.
Notes
- For a richer flavor, you may add 1/2 teaspoon of cumin to the spice mix.
- You can substitute sunflower seed butter for cashew butter for a nut-free version.
- Make ahead: You can roast and peel peppers a day ahead and store them covered in the fridge.
- If you don’t have smoked paprika, a dash of liquid smoke adds a similar dimension.
Nutrition
Common questions
Can I use jarred roasted red peppers instead of roasting my own?
Yes, jarred peppers work and cut prep time significantly. Drain and pat them dry before using, otherwise the extra liquid will dilute the flavor and you’ll need to simmer the soup longer to compensate.
What can I use instead of cashew butter?
Sunflower seed butter is the closest swap — same consistency, neutral enough flavor. A quarter-cup of raw sunflower seeds blended directly into the soup also works if you don’t have the butter, though you’ll want a high-powered blender to get it fully smooth.
Do I need a high-speed blender, or will an immersion blender do?
An immersion blender will get you most of the way there, but the texture won’t be quite as smooth, especially with the cashew butter. If that’s what you have, blend for at least two full minutes and consider straining the soup through a fine mesh sieve afterward.
Can I make this without any oil?
Yes. Use a quarter-cup of vegetable broth to soften the onion and garlic instead of olive oil, adding more broth a tablespoon at a time if it sticks. The soup will be slightly less rich but still flavorful.
My grocery store only has green or yellow bell peppers right now — can I use those?
Yellow peppers are a reasonable substitute; they’re sweet and roast well, though the color will be pale gold instead of red. Green peppers are more bitter and not a good fit here — if red and yellow are both unavailable, a mix of canned fire-roasted tomatoes and one or two yellow peppers is a better workaround.
If you liked this one
- Smoky Spanish Chickpea Stew
- Mediterranean Lentil Power Bowl
- Baked Ratatouille Herb Oil
- Golden Curried Parsnip Soup