When the days get busy and the weather turns chilly, there’s nothing more comforting than coming home to a warm bowl of Slow Cooker Sausage Lentil Soup.
This cozy classic has become a staple for families who want nutritious, hands-off meals with big flavor.
This recipe combines tender lentils, flavorful sausage, savory vegetables, and aromatic herbs to create a meal that tastes like it simmered all day, because it did.
Whether you’re feeding a crowd, meal prepping for the week, or looking for a healthier comfort food dinner option, this soup checks every box.
Let’s dive in.
Why You’ll Love Slow Cooker Sausage Lentil Soup
- Hands-off cooking method perfect for busy schedules
- High in protein and fiber for a filling, wholesome meal
- Packed with vegetables and nutrients
- Customizable with various sausage types and seasoning blends
- Makes excellent leftovers and freezes beautifully
Ingredients You’ll Need
Sausage:
Italian sausage works best (mild or spicy), but chicken or turkey sausage can also be used for a lighter version.
Lentils:
Green or brown lentils hold their shape well during slow cooking.
Vegetables:
A classic mirepoix of onion, carrots, and celery builds the flavor foundation.
Aromatics:
Garlic, thyme, bay leaf, and smoked paprika deepen the savory richness.
Broth:
Chicken or vegetable broth adds depth and balances the hearty ingredients.
Tomatoes:
Diced tomatoes add acidity and help tenderize the lentils.
Greens:
Spinach or kale stirred in at the end brings color and nutrients.
How to Make Slow Cooker Sausage Lentil Soup
Step 1: Brown the Sausage
While optional, browning sausage in a skillet before adding it to the slow cooker enhances flavor and caramelization. Drain excess fat.
Step 2: Add All Ingredients to the Slow Cooker
Combine lentils, chopped vegetables, garlic, tomatoes, broth, seasonings, and browned sausage.
Step 3: Cook on Low
Cook on low for 6–8 hours or on high for 3–4 hours, until lentils are tender.
Step 4: Stir in Greens
Add spinach or kale during the last 10 minutes of cooking.
Step 5: Serve
Ladle into bowls, finishing with freshly grated Parmesan or crusty bread on the side.
Tips for the Best Sausage Lentil Soup
- Don’t skip browning the sausage unless you need a true dump-and-go meal.
- Rinse lentils before adding them to remove dust or debris.
- Add salt at the end to avoid toughening the lentils.
- Use fire-roasted tomatoes for extra depth of flavor.
- Try smoked sausage for a bold, smoky twist.
Variations to Try
Spicy Version
Use hot Italian sausage and add crushed red pepper flakes.
Mediterranean Version
Add oregano, lemon zest, and chopped spinach.
Vegetable-Packed Version
Include zucchini, bell peppers, mushrooms, or potatoes.
Creamy Version
Stir in a splash of cream or coconut milk at the end.
What to Serve With Sausage Lentil Soup
- Crusty artisan bread
- Homemade cornbread
- Simple green salad
- Garlic toast
- Parmesan biscuits
This soup is hearty enough to stand alone, but pairing it with a warm bread element takes it to the next level.
Storage and Freezer Instructions
Refrigerator:
Store in an airtight container up to 4 days.
Freezer:
Freeze portions for up to 3 months. Thaw overnight in the fridge and reheat on the stovetop or microwave.
This soup tastes even better the next day as the flavors deepen and meld.
Recipe FAQ’s
Can I use a different type of sausage?
Yes. You can use chicken sausage, turkey sausage, or even smoked sausage. Italian sausage provides the best flavor.
Do lentils need to be soaked?
No. Lentils cook beautifully in the slow cooker without soaking.
Can I freeze this soup?
Absolutely. Cool completely, transfer to freezer-safe containers, and store for up to 3 months.
Easy Slow Cooker Sausage Lentil Soup Recipe
Ingredients
- 1 pound Italian sausage casing removed (mild or hot)
- 1 cup dry brown or green lentils rinsed
- 1 medium onion diced
- 3 medium carrots diced
- 2 celery stalks diced
- 4 cloves garlic minced
- 1 can (14.5 oz) diced tomatoes
- 6 cups chicken broth
- 1 teaspoon dried thyme
- 1 teaspoon dried oregano
- 1 teaspoon smoked paprika
- 1 bay leaf
- 1 teaspoon salt or to taste
- ½ teaspoon black pepper
- 2 cups fresh spinach optional, stirred in at the end
- 1 tablespoon olive oil optional, if browning sausage first
Instructions
Brown the Sausage (Optional but Recommended):
- Heat olive oil in a skillet over medium heat. Add the sausage, breaking it into crumbles, and cook until browned. Drain excess grease.
Add Ingredients to the Slow Cooker:
- Transfer the cooked sausage to the slow cooker. Add lentils, onion, carrots, celery, garlic, diced tomatoes, chicken broth, thyme, oregano, smoked paprika, bay leaf, salt, and pepper.
Cook the Soup:
- Cover and cook on LOW for 6–8 hours or HIGH for 3–4 hours, until lentils and vegetables are tender.
Finish the Soup:
- Remove the bay leaf. Stir in fresh spinach (if using) and let it wilt for 2–3 minutes.
Taste and Adjust Seasoning:
- Add additional salt or pepper if needed. Serve hot.