Creamy French Lentil Soup with Carrots and Thyme

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A comforting and velvety lentil soup simmered with carrots, onions, and fresh thyme for a rich taste of French countryside cooking. This french-inspired soups (vegetarian) ready in about 55 minutes pairs rinsed green lentils, medium, diced carrots, large, diced yellow onion for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 310 calories and feeds 4, 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.

Prep: 15 min Cook: 40 min Serves 4 French cuisine 310 cal/serving
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Ingredients

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Instructions

  1. Step 1: Heat 2 tbsp olive oil in a large pot over medium heat. Add 1 large diced yellow onion, 3 diced medium carrots, and 2 diced celery stalks. Sauté for 7-8 minutes until softened and fragrant.
  2. Step 2: Add 3 minced garlic cloves and cook for 1 minute until fragrant. Stir in 1 cup rinsed green lentils, 6 cups vegetable broth, 3 fresh thyme sprigs, and 1 bay leaf. Bring to a boil.
  3. Step 3: Reduce heat to low and simmer uncovered for 30-35 minutes until lentils are tender. Remove thyme sprigs and bay leaf.
  4. Step 4: Using an immersion blender, blend about half the soup until smooth to create a creamy texture while retaining some lentil chunks for body.
  5. Step 5: Stir in 1/2 cup heavy cream, 1 tsp salt, and 1/2 tsp black pepper. Warm for 5 minutes more, then garnish with 2 tbsp chopped fresh parsley before serving warm.

Frequently asked questions

How long does Creamy French Lentil Soup with Carrots and Thyme take to make?

Total time is about 55 minutes (15 min prep + 40 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Creamy French Lentil Soup with Carrots and Thyme?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep rinsed green lentils from drying out.

Can I substitute ingredients in Creamy French Lentil Soup with Carrots and Thyme?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Creamy French Lentil Soup with Carrots and Thyme for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Creamy French Lentil Soup with Carrots and Thyme vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.