Quick Recipe Version (TL;DR)
Quick Ingredients
- 3 large red bell peppers (about 1 1/2 lb), or 1 (12 oz) jar roasted red peppers, drained
- 2 tbsp olive oil, divided
- 1 medium yellow onion, diced
- 1 medium carrot, diced (optional but recommended)
- 3 garlic cloves, minced
- 1 cup (200 g) red lentils, rinsed
- 4 cups (1 L) vegetable broth
- 1 cup (240 ml) water (as needed for consistency)
- 1 tsp ground cumin
- 1/2 tsp smoked paprika
- 1/4 tsp red pepper flakes (optional)
- 1 tbsp tomato paste
- 1–1 1/4 tsp fine sea salt, to taste
- 1/4 tsp black pepper
- 1–2 tsp lemon juice or red wine vinegar
- Plain Greek yogurt or coconut yogurt, fresh herbs, toasted seeds, and olive oil for serving
Do This
- 1. Roast whole red peppers at 450°F (230°C) for 20–25 minutes until blistered and blackened, then cover, steam 10 minutes, peel, deseed, and roughly chop.
- 2. Rinse red lentils until the water runs clear; dice onion and carrot, and mince garlic.
- 3. In a pot, heat 1 tbsp olive oil over medium, sauté onion and carrot with a pinch of salt for 5–7 minutes until soft and lightly golden.
- 4. Add garlic, cumin, smoked paprika, and red pepper flakes; cook 1 minute, then stir in tomato paste.
- 5. Add roasted peppers, lentils, broth, 1 cup water, salt, and pepper; bring to a boil, then simmer gently for 20–25 minutes until lentils are very soft.
- 6. Blend the soup (immersion blender or regular blender in batches) until smooth; adjust thickness with more water if needed.
- 7. Stir in lemon juice or vinegar, taste and adjust seasoning, then serve hot with yogurt, herbs, toasted seeds, and a drizzle of olive oil.
Why You’ll Love This Recipe
- Slightly sweet and smoky from roasted red peppers and smoked paprika, with a gentle warmth from cumin.
- Protein-packed and naturally thickened with red lentils, so it is hearty and satisfying without cream.
- Simple, budget-friendly ingredients that turn into a cozy, restaurant-worthy soup.
- Perfect for meal prep: it reheats beautifully and freezes well for easy lunches or dinners.
Grocery List
- Produce: Red bell peppers, yellow onion, carrot, garlic, lemons (or use pantry vinegar), fresh parsley or cilantro.
- Dairy: Plain Greek yogurt (or non-dairy yogurt alternative, optional, for serving).
- Pantry: Red lentils, vegetable broth, olive oil, tomato paste, ground cumin, smoked paprika, red pepper flakes, salt, black pepper, toasted seeds or nuts (such as pumpkin seeds), extra-virgin olive oil for drizzling.
Full Ingredients
For the Roasted Red Pepper and Lentil Soup
- 3 large red bell peppers (about 1 1/2 lb / 680 g)
- Or substitute 1 (12 oz / 340 g) jar roasted red peppers, well drained (skip the roasting step if using jarred)
- 2 tbsp extra-virgin olive oil, divided
- 1 medium yellow onion, diced (about 1 cup)
- 1 medium carrot, peeled and diced (about 1/2 cup; optional but adds sweetness and body)
- 3 garlic cloves, minced
- 1 cup (200 g) dried red lentils, rinsed until water runs clear
- 4 cups (1 L) vegetable broth (low-sodium if possible)
- Up to 1 cup (240 ml) water, as needed to adjust thickness
- 1 tbsp tomato paste
- 1 tsp ground cumin
- 1/2 tsp smoked paprika
- 1/4 tsp red pepper flakes (optional, for heat)
- 1–1 1/4 tsp fine sea salt, or to taste
- 1/4 tsp freshly ground black pepper
- 1–2 tsp fresh lemon juice or red wine vinegar, to finish
For Serving (Optional but Recommended)
- Plain Greek yogurt or coconut yogurt, for swirling
- Fresh parsley or cilantro, finely chopped
- Toasted pumpkin seeds (pepitas), sunflower seeds, or croutons
- Extra-virgin olive oil, for drizzling
- Extra smoked paprika or black pepper, for dusting on top
Step-by-Step Instructions
Step 1: Roast the red peppers
Preheat your oven to 450°F (230°C). Line a baking sheet with parchment paper or foil for easier cleanup. Place the whole red bell peppers on the tray and drizzle with 1 tablespoon olive oil, rubbing them so they are lightly coated on all sides.
Roast for 20–25 minutes, turning once or twice, until the skins are blistered and blackened in spots and the peppers are collapsing. Transfer the hot peppers to a heat-safe bowl and cover tightly with a plate or plastic wrap. Let them steam for 10 minutes; this loosens the skins.
When cool enough to handle, peel off as much skin as will easily come away, remove the stems and seeds, and roughly chop the flesh. Set aside. If using jarred roasted red peppers, simply drain them very well and roughly chop; you can skip the roasting and peeling.
Step 2: Prepare the aromatics and lentils
While the peppers roast, dice the onion and carrot and mince the garlic. Place the red lentils in a fine-mesh sieve and rinse under cool running water, rubbing them gently with your fingers, until the water runs mostly clear. This helps prevent foaming and gives the soup a cleaner flavor.
Step 3: Build a flavorful base
In a medium to large heavy-bottomed pot or Dutch oven, heat the remaining 1 tablespoon olive oil over medium heat. Add the diced onion and carrot along with a small pinch of salt. Cook, stirring occasionally, for 5–7 minutes, until the onion is translucent and the vegetables are starting to turn lightly golden around the edges.
Add the minced garlic, 1 teaspoon ground cumin, 1/2 teaspoon smoked paprika, and 1/4 teaspoon red pepper flakes (if using). Stir constantly for about 1 minute, just until fragrant. Add the 1 tablespoon tomato paste and cook for another 1 minute, stirring, to lightly caramelize it. This step deepens the color and sweetness of the soup.
Step 4: Add lentils, roasted peppers, and simmer
Add the chopped roasted red peppers to the pot along with the rinsed red lentils. Pour in the 4 cups vegetable broth and 1 cup water. Stir to combine, scraping up any browned bits from the bottom of the pot. Season with 1 teaspoon salt and 1/4 teaspoon black pepper to start.
Increase the heat to bring the mixture to a gentle boil, then immediately reduce to a low simmer. Partially cover the pot with a lid, leaving a small gap for steam to escape. Simmer for 20–25 minutes, stirring occasionally, until the lentils are very soft and starting to break down and the carrots are completely tender.
Step 5: Blend until silky and adjust seasoning
Turn off the heat. Use an immersion blender directly in the pot to purée the soup until smooth and creamy. Move the blender around the pot, tipping it slightly to catch any chunks of vegetables or lentils. If you prefer a more rustic texture, you can blend only part of the soup.
If you are using a countertop blender, carefully ladle the soup into the blender in batches, filling no more than halfway. Loosely cover the lid and hold a kitchen towel over the top to allow steam to escape safely. Blend until smooth, then return the soup to the pot.
Check the consistency. If it is thicker than you like, stir in a little more hot water or broth, a few tablespoons at a time, until it reaches your preferred texture. Stir in 1–2 teaspoons lemon juice or red wine vinegar, then taste and adjust salt, pepper, and lemon to your liking. For more smokiness, add another pinch of smoked paprika or cumin.
Step 6: Warm through and serve with toppings
Return the pot to low heat and let the soup warm through for another 2–3 minutes, stirring occasionally. It should be steaming hot but not boiling vigorously at this stage.
Ladle the soup into warm bowls. Add a spoonful of Greek yogurt or coconut yogurt to each bowl and use the tip of a spoon or a skewer to swirl it into the surface. Sprinkle with chopped fresh parsley or cilantro, a handful of toasted pumpkin or sunflower seeds (or croutons), and finish with a light drizzle of extra-virgin olive oil. If you like, dust the top with a tiny pinch of smoked paprika or freshly ground black pepper for color and aroma. Serve immediately, ideally with crusty bread on the side.
Pro Tips
- Roast the peppers deeply. Do not be afraid of dark, blistered spots on the skins; that char is what gives the soup its smoky depth. Just peel off the loose skin afterward.
- Rinse the lentils well. This removes surface starch and helps the soup cook evenly, with a cleaner, less “starchy” taste.
- Blend safely. If using a countertop blender, always vent the lid and blend in small batches to avoid hot soup splattering.
- Control the thickness. Red lentils thicken a lot as they cook and as the soup cools. Keep extra hot water or broth handy and thin the soup to your ideal consistency right before serving.
- Season at the end. Adding a splash of lemon juice or vinegar at the end brings the flavors to life and balances the natural sweetness of the peppers and carrots.
Variations
- Creamy coconut version: Stir in 1/2 cup (120 ml) full-fat coconut milk after blending for a richer, dairy-free soup with a subtle coconut note.
- Extra smoky and spicy: Add a chopped chipotle pepper in adobo or 1–2 teaspoons harissa paste along with the spices for a deeper, spicier heat and more smokiness.
- Tomato-forward twist: Add 1 cup (240 ml) canned crushed tomatoes when you add the broth for a roasted red pepper–tomato lentil soup with extra tang.
Storage & Make-Ahead
Let the soup cool to room temperature, then store it in airtight containers in the refrigerator for up to 4 days. It will thicken as it sits; when reheating on the stovetop over low to medium heat, stir in a splash of water or broth to loosen it back to a velvety consistency. Stir frequently to prevent sticking. For longer storage, freeze the soup (without yogurt or fresh herb garnishes) in freezer-safe containers or bags for up to 2–3 months. Thaw overnight in the fridge or gently reheat from frozen over low heat, adding liquid as needed. Add fresh toppings like yogurt, herbs, seeds, and olive oil just before serving for the best texture and flavor.
Nutrition (per serving)
Approximate values for 1 of 4 servings, without toppings: about 260 calories, 13–15 g protein, 34 g carbohydrates, 8–10 g fat, and around 9–11 g fiber. Sodium will vary depending on your broth and how much salt you add. Adding yogurt, seeds, or extra olive oil will slightly increase the calories and fats, while also adding more protein and healthy fats.
