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Zucchini Pasta Sauce Recipe

This zucchini pasta sauce satisfies your craving for Italian food while providing the nutrients you need. It’s also one of my favorite meals to cook in the slow cooker.

Fresh Zucchini and Garden Vegetable Sauce for Spaghetti (Meat Optional)

Serving of spaghetti with zucchini pasta sauce and shredded Parmesan cheese

What do you get when you mix zucchini, tomatoes, peppers, onions, garlic, and lots of Italian seasoning?

A delicious and healthy meal that will have everyone begging for more, that’s what.

You might think that preparing such a meal is complicated with a whole bunch of steps. However, it’s quite the contrary.

This super easy meal is something anyone can make. That is, anyone who is tall enough to see the countertop and mature enough to handle a knife.

Some folks might think that a simple meal has to be bland or maybe even tasteless. However, that can’t be further from the truth.

All you have to do is chop up a bunch of vegetables, open a few jars or cans, and toss it all into the pot.

Turn on the slow cooker, walk away, and come back later to one of the best meals ever.

You can actually use whatever vegetables you have on hand. Since I picked up some zucchini that was on sale at Aldi, that’s the star of this recipe.

Add diced onions, peppers, and garlic to get even more vegetable goodness.

Sprinkle in some seasonings for flavor, spoon it over pasta, and you have a meal fit for royalty.

Spooning Italian gravy over spaghetti

I also had some chicken tenders in the freezer that needed to be cooked. So I cut them into bite-size pieces and tossed them in with the rest of the ingredients.

Zucchini Pasta Sauce Ingredients

You can use as many or as few of my recommended ingredients as you want.

Since this is your meal, take the recipe and tweak it to suit your family’s tastes.

I used 2 large zucchinis that are the star of this show.

2 large zucchinis on a cutting board

I also chose to use a pound of chicken tenders that I cut into bite-size pieces. That took all of about five minutes.

You don’t have to add any type of meat. Or you can use ground beef, pork, or even seafood.

This recipe also onions, bell peppers, garlic, mushrooms diced tomatoes, tomato paste, tomato sauce, chicken broth, Italian seasoning, garlic powder, and onion powder.

For exact measurements of each ingredient and full directions, go to the recipe card at the bottom of the page. You can even print out the card by using the “print” button.

How to Make Zucchini Pasta Sauce

Since I like to make cleanup easy, I always spray my slow cooker with nonstick cooking spray before adding the ingredients.

First, I placed the cut chicken and zucchini in the bottom of the pot. Try to evenly distribute it as much as possible.

I used to brown the chicken first, but I didn’t see that it made any difference. For that reason, I now put it in there raw.

Next, I added diced onions, diced bell pepper, mushrooms, and garlic. I had minced garlic in a jar, so that’s what I used. If you have fresh garlic, that’s even better.

Then I added a can of diced tomatoes, some tomato paste, and tomato sauce. After that, I sprinkled Italian seasoning, garlic powder, and onion powder into the mixture.

Finally, I poured some chicken broth into the pot. You can add as much or as little as you want, depending on how thick you like the sauce.

If you want more ingredients or seasonings, feel free to add them. Some things you might consider are sliced olives, capers, chopped eggplant, ground cinnamon, and basil.

Zucchini, tomatoes, mushrooms, peppers, onions, and other ingredients in the slow cooker pot

Turn the slow cooker on low and leave it for 6-8 hours. Or you can cook it on high for 3-4 hours.

As it cooks, the aroma of sauce might have you checking your watch to see if it’s suppertime yet. Trust me when I say I totally get it.

Cooked Italian gravy with vegetables and chicken

When it’s done, you’ll be more than ready to dig in.

And as you start eating, all of your senses will come together in perfect harmony. Yes, it’s that good.

Plate of spaghetti with zucchini sauce and shredded Parmesan cheese on top

More Recipes

Most of the time, when I cook Italian pasta, I serve some sort of bread. You can have Italian or French bread if you like the traditional fare.

Or you can serve it with cornbread to add an American southern touch.

Another thing you might want to have with your meal is a side salad. We like this Greek olive and feta salad because it just seems to go with this type of meal.

Another salad we enjoy is this chickpea salad. It has a delightful blend of flavors and textures that make it perfect for any meal.

Since you’re enjoying such a flavorful meal, keep the deliciousness going with this creamy lemon meringue pie. It’s always been one of our favorites around here.

See this recipe shared at Meal Plan Monday, Full Plate Thursday, and Weekend Potluck.

Yield: 6 servings

Zucchini Pasta Sauce

Plate of pasta with zucchini pasta sauce on top

When you want something that is both delicious and nutritious, make this zucchini pasta sauce and serve it over spaghetti.

Prep Time 15 minutes
Cook Time 4 hours
Total Time 4 hours 15 minutes


  • 2 large zucchinis cut into bite-size pieces
  • 1 pound of chicken breast cut into bite-size pieces (optional)
  • 1/2 cup of canned, sliced mushrooms (or 1 cup of fresh sliced mushrooms)
  • 1/2 cup of diced onion
  • 1/2 cup of diced bell pepper
  • One 15-ounce can of diced tomatoes
  • One 15-ounce can of tomato sauce
  • One 6-ounce can of tomato paste
  • 1 cup of chicken broth (or vegetable broth if you want to keep it vegetarian)
  • 2 tablespoons of Italian seasoning
  • 1 teaspoon of minced garlic
  • 1/2 teaspoon of garlic powder
  • 1/2 teaspoon of onion powder


    1. Spray the inside of your slow cooker with nonstick spray to make cleanup easier.
    2. Evenly distribute the chicken and zucchini pieces in the bottom of the pot.
    3. Add the diced onions, bell pepper, mushrooms, and minced garlic.
    4. Pour the diced tomatoes, tomato sauce, and tomato paste over the top.
    5. Sprinkle the Italian seasoning, garlic powder, and onion powder into the mixture.
    6. Pour the broth over the top.
    7. Give the mixture a good stir, pop the lid on top, and turn the slow cooker on.
    8. Cook on high for 3-4 hours or low for 6-8 hours.
    9. Serve over your favorite pasta.

Nutrition Information



Serving Size


Amount Per Serving Calories 207Total Fat 4gSaturated Fat 1gTrans Fat 0gUnsaturated Fat 2gCholesterol 65mgSodium 674mgCarbohydrates 18gFiber 5gSugar 10gProtein 28g

The nutrition information is a product of online calculators. I try to provide true and accurate information, but these numbers are estimates.

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