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Bowl of Slow Cooker Zucchini Soup topped with grated Parmesan and parsley on a light wooden table

Slow Cooker Zucchini Soup

This Slow Cooker Zucchini Soup is a time-saving dinner option that provides a delicious and healthy meal packed with fresh vegetables, perfect for busy nights.
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Prep Time 30 minutes
Cook Time 4 hours 15 minutes
Total Time 4 hours 45 minutes
Servings: 6 servings
Course: Main Course
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 1 ½ pounds sweet turkey sausage
  • 2 cups 1/2-inch pieces celery
  • 2 pounds zucchini, cut into 1/2-inch slices
  • 2 (28-ounce) cans diced tomatoes
  • 2 green bell peppers, cut into 1/2-inch slices
  • 1 cup chopped onion
  • 2 teaspoons salt
  • 1 teaspoon white sugar
  • 1 teaspoon dried oregano
  • 1 teaspoon Italian seasoning
  • 1 teaspoon dried basil
  • ¼ teaspoon garlic powder
  • 6 tablespoons grated Parmesan cheese (or to taste)

Method
 

  1. Heat a large skillet over medium-high heat. Add the turkey sausage and cook, stirring occasionally, until browned and crumbly, about 5-7 minutes. Drain and discard any grease.
  2. Add the celery to the skillet and cook for 10 minutes, stirring occasionally, until softened. Transfer the mixture to your slow cooker.
  3. Add the zucchini, diced tomatoes, green bell peppers, onion, salt, sugar, oregano, Italian seasoning, basil, and garlic powder to the slow cooker. Stir everything together to combine.
  4. Cover and cook on low for 4 to 6 hours. Take a break—it’s completely hands-off now!
  5. When ready to serve, ladle the soup into bowls and garnish each serving with a tablespoon of grated Parmesan cheese. Enjoy!

Notes

Don’t skip browning the sausage: This step adds so much flavor to the soup. It’s worth the extra 5 minutes! Use fresh zucchini: Frozen zucchini can turn mushy in the slow cooker, so fresh is best. Double the batch: This soup freezes beautifully, so make extra and stash it for busy nights. For a thicker soup: Let it cool slightly and blend half of it with an immersion blender. Serve with texture: Crusty French bread or a side of rice makes this already-comforting soup even heartier.