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Sausage and Lentil Soup (Slow Cooker)

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This hearty sausage and lentil soup is a rich and comforting one-pot meal made easy in the slow cooker. With smoky bacon, Italian sausage, vegetables, and protein-packed lentils, it’s perfect for chilly days and meal prepping.

  • Total Time: 4 hours 15 minutes (high) or 6 hours 15 minutes (low)
  • Yield: 6 servings

Ingredients

6 strips bacon, cut into small pieces

16 ounces Italian sausage

1 medium onion, finely chopped

2 celery sticks, finely chopped

1 medium red bell pepper, finely chopped

4 cloves garlic, minced

6 cups chicken broth

1 (15-ounce) can tomato sauce

1.5 cups dry green or brown lentils

1/2 teaspoon dried oregano

1/4 teaspoon crushed red pepper flakes (or to taste)

Salt and pepper, to taste

Instructions

  1. Fry bacon in a skillet over medium-high heat until crispy, about 10 minutes. Transfer to a paper towel-lined plate.
  2. In the same skillet, cook sausage until browned, about 7–8 minutes, breaking it up as it cooks. Transfer to the plate with bacon.
  3. Leave 1–2 tablespoons of grease in the skillet. Add onion, celery, and bell pepper. Sauté for 5–7 minutes until softened and lightly browned.
  4. Stir in garlic and cook for 30 seconds. Transfer contents of skillet to the slow cooker.
  5. Add bacon, sausage, chicken broth, tomato sauce, lentils, oregano, and red pepper flakes to the slow cooker. Stir to combine.
  6. Cook on high for 3–4 hours or on low for 6–8 hours until lentils are tender.
  7. Season with salt and pepper. Optional: Blend part of the soup with an immersion blender for a creamier texture.
  8. Serve hot and enjoy.

Notes

  • Use spicy sausage or more red pepper flakes for extra heat.
  • Add kale or spinach during the last 10 minutes of cooking for added greens.
  • Stir in balsamic vinegar at the end for brightness.
  • Swap bacon for olive oil if you prefer a lighter version.
  • This soup is freezer-friendly and great for meal prep.
  • Author: Monica
  • Prep Time: 15 minutes
  • Cook Time: 4 hours (high) or 6–8 hours (low)
  • Category: Soup
  • Method: Slow Cooker
  • Cuisine: Italian-American
  • Diet: Halal

Nutrition

  • Serving Size: 1.5 cups
  • Calories: 420
  • Sugar: 4g
  • Sodium: 880mg
  • Fat: 25g
  • Saturated Fat: 9g
  • Unsaturated Fat: 14g
  • Trans Fat: 0g
  • Carbohydrates: 26g
  • Fiber: 9g
  • Protein: 25g
  • Cholesterol: 55mg