Quality-Checked Vegan Lentil Soup

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · Published 2026-04-04 · Updated 2026-04-04

A deeply flavorful soup where each ingredient is measured precisely for consistent texture and taste, with quality checks at every stage. This vegetarian-inspired soups ready in about 55 minutes pairs brown lentils, medium onion, medium carrot for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 220 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Ingredients

• 1 cup brown lentils
• 1 medium onion
• 2 medium carrot
• 2 celery stalks
• 3 cloves garlic
• 14 oz can diced tomatoes
• 4 cups vegetable broth
• 1 tsp dried thyme
• 1 bay leaf
• 1 tbsp lemon juice

Instructions

1. Step 1: Rinse 1 cup brown lentils under cold water until water runs clear, checking for debris (critical quality control step). Finely dice 1 medium onion, 2 medium carrots, and 2 celery stalks.
2. Step 2: Heat a large pot over medium heat. Add diced onion, carrots, celery, and 3 minced garlic cloves. Sauté for 8 minutes until vegetables are softened but not browned, stirring frequently to prevent sticking.
3. Step 3: Add 14 oz can diced tomatoes (undrained), 4 cups vegetable broth, 1 tsp dried thyme, and 1 bay leaf. Bring to a gentle boil, then reduce heat to low and simmer uncovered for 25 minutes until lentils are tender but not mushy.
4. Step 4: Remove bay leaf. Stir in 1 tbsp lemon juice and taste. Adjust seasoning with salt if needed, ensuring the soup has a balanced tang and depth before serving.