One-Pot Sourdough Turkish Red Lentil Soup with Crispy Bread and Spiced Butter

Name: One-Pot Sourdough Turkish Red Lentil Soup with Crispy Bread and Spiced Butter
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Cuisine: Turkish
Ingredients: 1 cup (200 g) red lentils, rinsed, rinsed under cold water until water runs clear; 3 tablespoons (45 ml) extra-virgin olive oil, divided: 2 tablespoons for the soup, 1 tablespoon for the bread; 1 yellow onion, medium, finely diced (about ¾ cup / 150 g); 3 garlic cloves, minced; 2 tablespoons (30 g) tomato paste; 6 cups (1425 ml) vegetable or chicken broth; 1½ teaspoons (3 g) ground cumin; ¼ teaspoon (½ g) red pepper flakes; 1 teaspoon (2 g) smoked paprika; kosher salt, to taste; freshly ground black pepper, to taste; 6 ounces (170 g) sourdough bread, cut into ½-inch (1.3 cm) cubes; 2 tablespoons (28 g) unsalted butter; 2 tablespoons (30 ml) fresh lemon juice (optional); 2 tablespoons (6 g) fresh mint leaves, chopped, roughly chopped, for garnish (optional)

From the MyKitchenBank Kitchen

A warming Turkish-inspired red lentil soup finished with crispy sourdough croutons and a drizzle of spiced butter. This one-pot meal combines earthy red lentils, aromatic spices, and tangy tomato paste, served with crunchy bread for textural contrast. Ready in under an hour, it's comfort food with bold, balanced flavors.

Prep: 15 min
Cook: 30 min
Wait: 10 min
Total: 55 min
Makes: 4 servings (about 6 cups soup)

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Ingredients

4 servings

1 cup (200 g) red lentils, rinsed, rinsed under cold water until water runs clear
3 tablespoons (45 ml) extra-virgin olive oil, divided: 2 tablespoons for the soup, 1 tablespoon for the bread
1 yellow onion, medium, finely diced (about ¾ cup / 150 g)
3 garlic cloves, minced
2 tablespoons (30 g) tomato paste
6 cups (1425 ml) vegetable or chicken broth
1½ teaspoons (3 g) ground cumin
¼ teaspoon (0.5 g) red pepper flakes
1 teaspoon (2 g) smoked paprika
kosher salt, to taste
freshly ground black pepper, to taste
6 ounces (170 g) sourdough bread, cut into ½-inch (1.3 cm) cubes
2 tablespoons (28 g) unsalted butter
2 tablespoons (30 ml) fresh lemon juice (optional)
2 tablespoons (6 g) fresh mint leaves, chopped, roughly chopped, for garnish (optional)

Equipment (7)

4-quart (3.8 L) heavy-bottomed pot with lid
Large skillet or cast-iron pan
Fine-mesh strainer
Wooden spoon
Immersion blender or regular blender
Measuring spoons and cups
Knife and cutting board

Steps

Before you start

Cube the sourdough bread and have it ready before you start cooking the soup
Measure out all spices (cumin, red pepper flakes, paprika) into small bowls
Use a heavy-bottomed pot (4-quart) to prevent sticking and ensure even heat distribution

1
Sauté aromatics
- Heat 2 tablespoons olive oil in a 4-quart (3.8 L) heavy-bottomed pot over medium heat.
- Add the diced onion and cook for 5–6 minutes, stirring occasionally, until softened and translucent.
- Add the minced garlic and cook for 1 minute more, until fragrant.
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Ready when: Onion is soft and translucent; garlic smells fragrant
Tip: Don't brown the garlic—it will turn bitter. Keep the heat at medium and stir frequently.
2
Bloom spices in tomato paste
- Stir the tomato paste into the pot along with the cumin, smoked paprika, and red pepper flakes.
- Cook for 1–2 minutes, stirring constantly, to toast the spices and caramelize the tomato paste slightly.
- This deepens the flavors.
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Ready when: Spices smell warm and aromatic; tomato paste darkens slightly
Tip: Blooming the spices in fat releases their essential oils and prevents raw spice flavor in the finished soup.
3
Add lentils and broth
- Add the rinsed red lentils and the broth to the pot, stirring well to combine.
- Bring the mixture to a boil over medium-high heat, then reduce the heat to medium-low.
- Partially cover the pot with the lid (leave a small gap to allow steam to escape) and simmer for 18–22 minutes.
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Ready when: Lentils are very soft and beginning to dissolve; broth is slightly thickened
Tip: Partially cover the pot so steam escapes and you can see the soup bubbling gently. Fully covering it risks boiling over.
4
Blend the soup
- Remove the pot from heat.
- Using an immersion blender, blend the soup until it reaches your desired consistency—some prefer it completely smooth, while others like some texture.
- If using a regular blender, work in batches and return the blended soup to the pot.
- The soup should be creamy but still pourable.
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Ready when: Soup is creamy and unified, with your preferred level of smoothness
Tip: If using a regular blender, let the soup cool for 2 minutes first to avoid splattering. Fill the blender only halfway and hold the lid with a kitchen towel.
5
Season to taste
- Taste the soup and season generously with kosher salt and freshly ground black pepper.
- If you're using the optional lemon juice, add it now (about 2 tablespoons) for brightness and tartness that complements the warm spices.
- Simmer gently for 1 more minute.
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Ready when: Soup tastes well-balanced; lemon juice (if used) is fully incorporated
Tip: Taste as you go and adjust the salt and spice gradually. Red lentil soup can handle bold seasoning.
6
Make spiced butter
- While the soup simmers, melt the butter in a small saucepan over low heat.
- Stir in a pinch of cumin, a tiny pinch of red pepper flakes, and a small pinch of salt.
- Remove from heat and keep warm.
- This will be drizzled over the finished dish.
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Ready when: Butter is melted and spices are evenly distributed
Tip: Keep the spiced butter warm but not hot—if it sizzles, it will separate. Make this while the soup simmers.
7
Crisp the bread
- Heat 1 tablespoon olive oil in a large skillet or cast-iron pan over medium-high heat.
- Once shimmering, add the cubed sourdough bread in a single layer.
- Cook for 4–5 minutes, stirring occasionally, until the cubes are golden brown and crispy on all sides.
- Season lightly with salt.
- Transfer to a paper towel-lined plate.
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Ready when: Bread cubes are golden brown and crispy; they crunch when broken
Tip: Don't overcrowd the pan—work in batches if necessary. The bread must be in a single layer to crisp evenly.
8
Serve and garnish
- Ladle the soup into bowls.
- Top each serving with a generous handful of crispy bread cubes, a drizzle of the warm spiced butter, and a small scatter of fresh mint leaves (if using).
- Serve immediately while the bread is still crunchy.
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Tip: Add the croutons just before serving—if they sit in the soup, they'll soften. Serve the soup hot so the spiced butter stays silky.

Good to know

Tips

Toast the spices in tomato paste for 1–2 minutes before adding broth—this bloom releases aromatic oils and prevents raw spice flavor.
For a chunky-textured soup, blend only half of it and stir the blended portion back into the pot, leaving some lentils whole.
Make the crispy bread last and add it to bowls just before serving—bread absorbs liquid quickly and will lose its crunch if left in the hot soup.
Red lentil soup thickens as it cools; when reheating, add broth or water (¼–½ cup at a time) until it reaches your preferred consistency.

Make ahead

You can prepare the soup up to 2 days ahead: cool it completely, cover, and refrigerate. Reheat gently over medium-low heat on the stovetop, stirring occasionally. Make the crispy bread and spiced butter just before serving for the best texture and flavor.

Storage & reheating

Room temperature: not recommended (lentils spoil quickly). Refrigerator: store the soup in an airtight container for up to 3 days. Reheat on the stovetop over medium-low heat, stirring often and adding a splash of broth or water if it's too thick. Freezer: freeze for up to 2 months in airtight containers or freezer bags. Thaw overnight in the refrigerator and reheat on the stovetop. Do not freeze the crispy bread; make fresh before serving.

Substitutions

red lentils, rinsed → yellow split peas or yellow lentils. Yellow varieties will make the soup slightly paler and earthier, but work equally well. Use the same amount and cooking time.
sourdough bread → crusty white bread, focaccia, or pita bread. Any sturdy bread will crisp up nicely. Avoid soft white sandwich bread, which won't achieve a crispy texture.
smoked_paprika → sweet paprika or Aleppo pepper. Sweet paprika will be milder; Aleppo pepper (if available) adds fruity heat. Use the same amount.
vegetable or chicken broth → chicken broth or bone broth. Chicken or bone broth deepens the flavor. Use the same amount; the soup will be richer.