Best Lentil Soup with Sausage & Kale (One-Pot, 45 Minutes)

This hearty lentil soup is packed with protein, made in one pot, and ready in 45 minutes. Perfect for busy weeknights – and picky eaters love it too!

This lentil soup with sausage and kale is packed with protein, made in one pot, and ready in just 45 minutes. It’s hearty, healthy, and perfect for busy weeknights when you need something warm and filling without extra effort.

Why You’ll Love This Lentil Soup

• One pot, 45 minutes – minimal cleanup, maximum flavor
• Protein-packed (22g per serving) – keeps you full for hours
• Freezes beautifully – make once, eat for up to 3 months
• Budget-friendly – uses pantry staples and affordable sausage
• Tastes even better the next day – perfect for meal prep

Ingredients You’ll Need

For the Soup Base

• 1 lb savory sausage
• 1 tbsp olive oil
• 1 yellow onion, diced
• 2 carrots, chopped
• 2 celery ribs, chopped
• 3 cloves garlic, minced
• 1 tbsp tomato paste
• 1 tbsp all-purpose flour (optional, for thickening)

For the Liquid & Lentils:

• 6 cups low-sodium chicken broth (or vegetable broth)
• 1 cup dry brown lentils (or French green lentils), rinsed
• 1 can (14.5 oz) diced tomatoes, undrained
• 1 tsp Worcestershire sauce
• ½ tsp mustard powder
• ½ tsp dried thyme
• ¼ tsp black pepper
• ¼ tsp salt (adjust to taste)
• 2 tsp hot sauce (optional, mild like Frank’s RedHot)

For the Greens & Finish:

Grated Parmesan for serving (optional)

2 cups chopped kale or fresh spinach

Fresh parsley for garnish

How to Make Lentil Soup (Step-by-Step)

Step 1: Brown the sausage
Heat a Dutch oven over medium-high heat. Add sausage and cook, breaking it up with a spoon, until browned (about 6-8 minutes). Transfer the sausage to a plate. Leave about 1 tablespoon of drippings in the pot.

Step 2: Sauté vegetables
Reduce the heat to medium. Add onion, carrots, and celery. Sauté for 5-6 minutes until softened. Add garlic and cook for 1 minute until fragrant.

Step 3: Build flavor
Stir in the tomato paste and cook for 2 minutes, scraping the bottom of the pot. If using flour, sprinkle and stir for 1 minute.

Step 4: Add liquids and lentils
Pour in 1 cup of broth and scrape up browned bits from the bottom. Add remaining broth, lentils, diced tomatoes (with juices), Worcestershire sauce, mustard powder, thyme, black pepper, and hot sauce. Stir.

Step 5: Simmer
Bring to a boil, then reduce the heat to low. Cover and simmer for 25-30 minutes until lentils are tender but still hold their shape. Stir occasionally.

Step 6: Add sausage and greens
Return the sausage to the pot. Stir in kale or spinach. Cook for 5 more minutes, until the greens wilt and the sausage heats through.

Step 7: Taste and serve
Adjust salt and pepper if needed. Ladle into bowls, garnish with parsley and Parmesan. Serve hot with crusty bread.

Tips & Variations

Ingredient Swaps:

• No sausage? Use ground turkey, ground beef, or 8 oz mushrooms (for vegetarians)
• No kale? Fresh spinach works – add at the very end
• No brown lentils? Use French green lentils – add 5-10 minutes cooking time
• Want it spicy? Add ½ tsp red pepper flakes with the garlic

Flavor Boosters:

• Don’t skip browning the sausage – it adds deep flavor
• Taste before adding extra salt – sausage already contributes plenty
• A squeeze of lemon at the end brightens the whole soup

Pro Tips for the Best Lentil Soup

• Don’t overcook lentils – they should hold shape
• Brown the sausage properly for a deep flavor
• Add greens at the end to keep color fresh
• Soup thickens the next day – add broth when reheating

Storage & Freezing

Refrigerator:
Store in airtight containers for up to 4 days. Reheat gently on stovetop or microwave, adding a splash of broth if needed.

Freezer:
Freeze for up to 3 months. Thaw overnight in the fridge before reheating. This soup freezes beautifully – the lentils hold their texture.

Meal prep tip:
Portion into single-serving containers for easy grab-and-go lunches.

Lena Joy

Easy Hearty Lentil Soup with Sausage & Kale

A hearty, protein-packed lentil soup ready in 45 minutes and made in one pot. Perfect for busy weeknights and meal prep.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 people

Course: soup, Main course

Cuisine: American, Italian

Calories: 340

Ingredients Equipment Method Notes

Ingredients

  

=== For the Soup Base ===

• 1 lb savory sausage
• 1 tbsp olive oil
• 1 yellow onion diced
• 2 carrots chopped
• 2 celery ribs chopped
• 3 cloves garlic minced
• 1 tbsp tomato paste
• 1 tbsp all-purpose flour optional, for thickening

=== The Liquid & Lentils ===

• 6 cups low-sodium chicken broth or vegetable broth
• 1 cup dry brown lentils or French green lentils, rinsed
• 1 14.5 oz can diced tomatoes, undrained
• 1 tsp Worcestershire sauce
• ½ tsp mustard powder
• ½ tsp dried thyme
• ¼ tsp black pepper
• ¼ tsp salt adjust to taste
• 2 tsp hot sauce optional, mild

=== The Greens & Finish ===

• 2 cups chopped kale or fresh spinach
• Fresh parsley for garnish
• Grated Parmesan for serving optional
• 1 tbsp lemon juice (freshly squeezed, optional)

Equipment

• Dutch oven or large heavy-bottomed pot (6-quart)
• cutting board
• Chef's knife
• Measuring cups and spoons
• Wooden spoon or spatula
• Airtight containers for storage
• Ladle for serving

Method

 

1. Brown sausage in pot (6-8 min), then remove. Leave 1 tbsp drippings.
2. Sauté onion, carrot, celery – 5 min. Add garlic – 1 min.
3. Stir in tomato paste – 2 min. Add flour if using – 1 min.
4. Add 1 cup broth, scrape pot. Add remaining broth, lentils, tomatoes, Worcestershire, mustard powder, thyme, pepper, hot sauce. Stir.
5. Bring to boil, then reduce heat. Cover and simmer 25-30 min until lentils tender.
6. Return sausage, add kale or spinach. Cook 5 min.
7. Add a squeeze of fresh lemon juice, then adjust salt and pepper to taste before serving.

Notes

Swap sausage for mushrooms to make it vegetarian. Use kale or spinach. Store in fridge for 4 days or freeze for 3 months.

Nutrition (per serving):

 

Nutrient	Amount	Nutrient	Amount
Calories	340 kcal	Protein	22g
Carbohydrates	28g	Fat	15g
Fiber	10g	Saturated Fat	5g
Sugar	6g	Cholesterol	45mg
Sodium	680mg	Calcium	80mg

Nutrition is estimated and may vary based on ingredients and preparation methods.

 

Your Top 6 Questions About Lentil Soup (Answered)

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Why This Soup Is Now a Tradition in Our Home

This soup is perfect for meal prep. It tastes even better the next day and freezes beautifully for up to 3 months. Make a big batch on Sunday and enjoy easy lunches or dinners all week.

Sources:

FDA Food Safety – storage guidelines

USDA FoodData Central – nutrient data