Slow Cooker Zucchini Soup Recipe

Slow Cooker Zucchini Soup Recipe

Cook Time: 255 minutes

Ingredients

This recipe was developed at its original yield. Ingredient amounts are automatically adjusted, but cooking times and steps remain unchanged. Note that not all recipes scale perfectly.

Original recipe (1X) yields 6 servings:

  • 1 pounds sweet Italian sausage
  • 2 cups -inch pieces celery
  • 2 pounds zucchini, cut into -inch slices
  • 2 (28 ounce) cans diced tomatoes
  • 2 green bell peppers, cut into -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
  • teaspoon garlic powder
  • 6 tablespoons grated Parmesan cheese, or to taste

Directions

Step 1: Heat a large skillet over medium-high heat. Add sausage and cook, stirring frequently, until browned and crumbly, about 5 to 7 minutes. Once cooked, drain and discard the excess grease.

Step 2: Stir in the celery and continue to cook, stirring occasionally, until the celery softens, about 10 minutes. Once done, transfer the mixture to a slow cooker.

Step 3: Add zucchini, diced tomatoes, bell peppers, onion, salt, sugar, oregano, Italian seasoning, basil, and garlic powder into the sausage mixture in the slow cooker. Stir to combine evenly.

Step 4: Set the slow cooker to cook on Low for 4 to 6 hours. Once the cooking time has passed, give the dish a final stir.

Step 5: When serving, garnish each portion with 1 tablespoon of grated Parmesan cheese for added flavor and richness.

Nutrition Facts (per serving)

  • Calories: 389
  • Total Fat: 24g (30% Daily Value)
  • Saturated Fat: 9g (43% Daily Value)
  • Cholesterol: 49mg (16% Daily Value)
  • Sodium: 2218mg (96% Daily Value)
  • Total Carbohydrate: 26g (9% Daily Value)
  • Dietary Fiber: 6g (23% Daily Value)
  • Total Sugars: 13g
  • Protein: 22g (44% Daily Value)
  • Vitamin C: 86mg (95% Daily Value)
  • Calcium: 214mg (16% Daily Value)
  • Iron: 5mg (27% Daily Value)
  • Potassium: 1359mg (29% Daily Value)

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

Comments

Muzzie

10/06/2025 01:52:54 PM

I have gotten recipes from All recipes almost every week for several years and this is the first review I have done. This is without a doubt the best soup I have ever had. I made it exactly as it was written (I hate it when people review & give stars when they have changes it so much that it is not the same recipe) Anyway, that said I changed nothing. I put some aside for my Mom but it was so good that I ended up eating mine and her's too. My bad. So thank you Jennifer for a wonderful soup recipe.

LuAnn

03/07/2023 01:20:08 AM

Oh my gosh, who would believe that such a simple recipe would be so good! I downsized it a little bcs I only had 1 lb of the sweet Italian sausage. So, used one bell pepper (a big one) and a 28 oz plus a 303 can of tomatoes, San Marzano. Used a mix of zucchini and yellow squash. Kept the seasoning as per recipe, and added 2 cups of chicken stock near the finish when I realized there was very little liquid. The parmesan is perfect on it. Tonight I'm making cornbread to go with the leftovers. What my daughter didn't take, that is!

fruitdog

05/19/2020 12:15:36 AM

This definitely would not have been a soup, or even a thick soup without added broth. I went with spicy sausage out of preference and made balls that I browned in a bit of olive oil, threw them in the slow cooker, and softened all the other veg and fresh garlic in the drippings before adding them to the sausage. I cut the zucchini more like 5/8" half moons and they were perfect after five hours. Will do again!

Jay Braun

09/15/2020 11:36:54 PM

Delicious soup!! I used 1 lb regular Italian sausage and a half pound spicy Italian. Other than that, I went by the recipe. Didn't put it in slow cooker though cuz I didn't have 6 hours till supper. Used induction stove and Dutch oven. Filled it to the brim. Cooked for 3 hours at 250 degrees or so.

Pinai Cook

12/17/2019 08:45:21 PM

Just made this yesterday. First it was really delicious. I made some changes,I used 1.5 lbs of the sausage but used the hot italian sausage and 1/2 recipe for the vegetables but full amount for the seasonings. I slow cooked for 6 hours. The liquid from the vegetables was just enough to make it soupy.Very good with parmesan and a roll or any kind of bread.Will make again.

The Dutch Girl

09/05/2021 10:52:50 PM

Excellent flavor and great way to use up all the garden veggies and stuff in the fridge. I followed the recipe for the most part. I didn't brown the sausage but rather tossed it in raw, used sweet and hot Sausage both. I also tossed in a carrot, a little chicken stock and chopped garlic instead of powder. (simply because they were in the fridge and would've been thrown away if not used soon- seriously maybe a cup of chicken stock. ) It would be tough to mess up this soup! That's it! I served it with great crusty Italian bread from our local bakery. A Simple Sunday Supper! Makes a huge pot so I will eat it again tomorrow, freeze some, and share some.

Tanya Colee

08/29/2021 07:40:05 PM

It’s seriously delicious! I’ve made this 4 times now, cutting the recipe back a bit because my slow cooker is a bit too small for the full recipe. I chop the zucchini a bit smaller than it is called for, and I use fresh garlic that I sauté with the sausage and celery. I also serve this over pasta. Thank you for such a delicious soup!

cubfin2000

05/06/2020 11:59:46 PM

I followed the recipe exactly except I used a Ninja Foodi hi pressure for 15 min then natural release. Sooo good and quick

cmach

05/26/2023 03:01:24 PM

This is the second time - -I have made this soup-so yummy! In my mind it makes way more than 6 servings - fills my crockpot but I am able to freeze it! This time I partially peeled zucchini in strips with peeler as last time I had icky peels floating off the veggie- worked better for me. I had one only large can of diced tomatoes but also a small can of fire roasted ones and a small can with jalapeño. It didn’t make it “hot” but gave a more intense flavor! It gets better the longer it sits . Both time it was super!

Hannah

06/07/2021 03:37:55 PM

This is very tasty! I bought my zucchini before I chose this recipe, so I only had 1.55 pounds, but the balance seems good to me. The Italian sausage I bought comes in 1-lb packages, so I just used 1 pound instead of 1.5 lbs. I put in white beans instead of celery for a texture/protein boost (and because I never have a use for the rest of the celery). I added a few cloves of fresh garlic to this in addition to the garlic powder. Perfect meal to set and forget; I was out for 4-5 hours while it was cooking and it cooked nice and evenly. It doesn't look very soupy at first, but those veggies release a lot of water as they cook.

Eli Dinkelspiel

05/11/2020 01:28:01 AM

This is pretty good, not great. I tend to rate things harshly so 3 stars is actually above average. One rec I would have would be to add a little more sausage and onion to give the recipe some variety. Another would be to cook the sausage for like, 3 minutes before adding the celery, but then cook them together for over 10 minutes. It is absolutely vital that the celery is properly softened before putting it in the pot, otherwise, it'll be too crunchy in the finished meal. Plus, you absolutely HAVE to add plenty of parmesan cheese or it sucks. If you have an Instant Pot, make sure you set the slow cook timer to >5 hours.

blackhighheels

07/11/2025 11:36:54 PM

Delicious. I cut the salt by half to accommodate people's dietary requirements but made no other changes. This made a lot of soup. Served with garlic bread.

Christine

02/10/2025 12:46:07 PM

Followed the recipe to a tee as well. Was enjoyed by all. Wouldn't change anything. Served with a garlic bread twist.

Janet Cruz

02/07/2025 04:49:27 PM

So much flavor, I’m impressed.

Elizabeth Wright

10/23/2024 10:47:18 PM

New favorite, hands down.

Michelle Druley Foster

03/30/2024 05:07:21 PM

I make this recipe regularly because it has become one of my very favorite soups. I don't change a thing except that I always forget to cook the celery with the sausage before putting it in the crock pot but it still turns out just fine. I love that it makes its own broth from the all veggies that are in it.

Gary Phile

11/18/2023 06:59:21 PM

I really liked this! I made zoodles instead of using slices. This turned it into a sort of noodle soup. I printed this out and have it in my kitchen for regular use. Thank you for posting this recipe.

Laura Wheeler

09/29/2023 04:15:04 AM

Yummy! I used medium breakfast sausage and it gave it just the right touch!

KANDIYOHIV

09/08/2023 11:51:31 PM

Very good. We didn't have enough tomatoes so we added an extra cup of chicken broth. Definitely make again. We used the amount of spices it asked for and it was good. Maybe add a can of white beans next time.

ozborne

08/28/2023 01:52:17 PM

Delicious! Left out sausage for vegetarian version & used fire roasted tomatoes. Thank you for sharing!