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Cooked zucchini and squash with parsley sprinkled on top.
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3.88 from 32 votes

Sautéed Zucchini and Squash

Sautéed Zucchini and Yellow Squash is a quick and easy recipe ready in just 20 minutes! This simple vegan and Whole30 Summer dish is one of the best zucchini and yellow squash recipes.
Prep Time5 minutes
Cook Time15 minutes
Total Time20 minutes
Course: Dinner, Side Dish
Cuisine: American
Servings: 4 servings


  • 2 Tbsp. olive oil
  • 1 Tbsp. butter or additional oil
  • ¾ cup sweet onion finely diced
  • 2 cloves garlic crushed
  • 2 cups summer squash* cut into ½-inch cubes
  • 2 cups zucchini* cut into ½-inch cubes
  • ¾-1 tsp. salt to taste
  • ¼ tsp. pepper to taste
  • Parsley finely chopped, optional


  • In a large skillet over medium heat add 2 Tbsp. olive oil and onions. Cook for 2-3 minutes.
  • Add crushed garlic and saute for 1 minute.
  • Stir in squash, zucchini, salt, pepper and butter. Cover skillet with a lid and cook for 5 minutes.
  • Uncover and stir. Continue cooking for 5-7 minutes or until squash are cooked to your liking. (If you would like to lightly brown and caramelize your squash, let sit for 1-2 minutes before stirring.)
  • Serve zucchini and squash with additional salt and pepper to taste and a sprinkle of fresh parsley. Enjoy!


  • Feel free to substitute with all yellow squash or all zucchini.
  • Use oil or vegan butter in place of regular butter if dairy-free or vegan.

Meal Prep and Storage

  • To Prep-Ahead: Finely chop the onion and store it separately from the cut squash. Keep uncooked vegetables in an airtight container in the refrigerator for up to 3-4 days.
  • To Store: Keep leftover sautéed squash in an airtight container in the refrigerator for up to 3-4 days.
  • To Freeze: Allow to cool, then transfer to an airtight freezer-safe container, freeze up to 3 months.  
  • To Reheat: While you can always pop it back in the microwave, the best way to reheat this yellow squash and zucchini is to add it to a skillet with a touch of oil or butter. Cook over medium-low heat until heated through.


Calories: 142kcal | Carbohydrates: 9g | Protein: 2g | Fat: 11g | Saturated Fat: 1g | Sodium: 370mg | Potassium: 548mg | Fiber: 2g | Sugar: 6g | Vitamin A: 390IU | Vitamin C: 36.1mg | Calcium: 39mg | Iron: 0.8mg