Caramelized Onion Red Lentil (Printable Version)

A comforting bowl featuring sweet caramelized onions, tender red lentils, and aromatic spices for a warming lunch or light dinner.

# What You'll Need:

→ Vegetables

01 - 3 large yellow onions, thinly sliced
02 - 2 cloves garlic, minced
03 - 2 medium carrots, diced
04 - 1 stalk celery, diced

→ Lentils & Staples

05 - 1 cup dried red lentils, rinsed
06 - 6 cups vegetable broth

→ Spices & Seasonings

07 - 2 tbsp olive oil
08 - 1 bay leaf
09 - 1 tsp ground cumin
10 - 1/2 tsp smoked paprika
11 - 1/4 tsp ground black pepper
12 - 1/2 tsp dried thyme
13 - 1–1.5 tsp salt, to taste

→ Garnish (optional)

14 - Chopped fresh parsley
15 - Lemon wedges

# Directions:

01 - In a large soup pot, heat olive oil over medium-low heat. Add sliced onions and a pinch of salt. Cook, stirring occasionally, for 20–25 minutes until onions are deeply golden and caramelized.
02 - Add garlic, carrots, and celery. Sauté for 3–4 minutes until slightly softened.
03 - Stir in cumin, smoked paprika, black pepper, thyme, and bay leaf. Cook for 1 minute until fragrant.
04 - Add rinsed red lentils and vegetable broth. Bring to a boil, then reduce heat to a simmer. Cook uncovered for 15–20 minutes, or until lentils and vegetables are soft.
05 - Remove bay leaf. Use an immersion blender to blend soup partially or fully, depending on desired texture.
06 - Taste and adjust salt and pepper as needed. Serve hot, garnished with fresh parsley and a squeeze of lemon juice if desired.

# Expert Hints:

01 -
  • The deep sweetness from properly caramelized onions makes this taste like it simmered all day, even though it comes together in under an hour
  • Red lentils practically melt into the soup, creating a naturally creamy texture without any dairy
  • This soup keeps beautifully for days and actually tastes better as leftovers, making it perfect for meal prep
02 -
  • The patience you show during the onion caramelizing phase is what separates good soup from great soup, do not rush this step
  • Red lentils vary by brand, so trust your eyes and taste buds more than the timer when checking for doneness
  • The soup will continue to thicken as it sits, so if you plan to refrigerate leftovers, you might want to add a splash of broth when reheating
03 -
  • If you do not have an immersion blender, carefully transfer the soup in batches to a regular blender, but never fill it more than half full
  • The lemon wedge at serving time is not optional, that acid brightness cuts through the richness and makes all the flavors pop

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