Zucchini Gratin with Yellow Squash

Zucchini Gratin with Yellow Squash is a luscious creamy cheesy medley of zucchini, yellow squash, onions, and garlic. It is quick and easy to prepare.  It will make a summer squash lover out of you!

Summer is in full force here, with it comes lots of fresh zucchini and yellow squash.  Even if you don’t grow it, the season brings such an abundance that the market price drops, consequently making this dish even more desirable.  This delectable Zucchini Gratin takes about 15 minutes of your devoted time, and then it is in the oven for an additional 15-20 minutes, making it very doable for a weeknight meal. This recipe will bring out a passion for zucchini and squash that you never knew you had!

What is zucchini?

Zucchini is a summer squash.  It is native to Central America and Mexico but grown throughout the United States during the warm summer months. While you may think of zucchini as a vegetable, it is a fruit.  Zucchini and yellow squash are low in calories with a low glycemic index. Both squashes are a good source of vitamins A and C, fiber, and potassium, and they make an excellent zucchini gratin.

How do you make zucchini gratin?

This delectable recipe could not be any easier!  Using an ovenproof skillet, melt the butter and add the onion.  Saute until the onion is slightly soft and browned on the edges.  Add the garlic and cook one more minute.  Add cream and simmer until bubbly and slightly thickened.  Slowly stir in the Parmesan then add the zucchini and yellow squash and cook for a few more minutes.  Sprinkle with Gouda and bake for 15-20 minutes.

So easy and so delicious. It is amazing what happens to a veggie after you bake it in a bath of cream and cheese.  Oh yeah, don’t forget to give credit to the garlic!  As if that isn’t enough there is a blanket of smoked gouda on the top to create the most delectable squash dish ever!

More zucchini recipes you will love!

Zucchini and Yellow Squash Au Gratin

Tender pieces of zucchini and yellow squash in a mouthwatering creamy cheese sauce. This delectable easy skillet vegetable will quickly become one of your family favorites.

4.96 from 65 votes

Print Pin Rate

Course: Side Dish

Cuisine: American

Prep Time: 10 minutes minutes

Cook Time: 35 minutes minutes

Servings: 4

Calories: 412kcal

Author: Beth Pierce

Ingredients

• 2 tablespoons butter
• 1/2 onion thinly sliced
• 1 small zucchini sliced in rounds 1/8 to 1/4 inch thick please see notes
• 1 small yellow squash sliced in rounds 1/8 to 1/4 inch thick please see notes
• 2 large cloves garlic minced
• 1/2 cup heavy cream
• 1/4 cup grated parmesan
• 1 cup shredded smoked gouda

Instructions

• Preheat oven to 450 degrees.
• Melt butter in an oven-proof skillet over medium heat. Add onion and cook until the edges start to brown, approximately 5 minutes. Add garlic and cook for an additional 1 minute. Add cream and simmer until bubbly and starting to thicken. Slowly stir in parmesan. Add zucchini and yellow squash and cook an additional 4-5 minutes.
• Sprinkle with smoked gouda and bake in the oven for 15-20 minutes or until cheese is golden brown.

Video

Notes

The zucchini that I used were on the smaller side. Some of the late summer zucchini I see coming in are much larger. For those, I would double the cream and the Parmesan. The large zucchini are sometimes a little tougher and may require additional simmering and/or baking time.

Nutrition

Calories: 412kcal | Carbohydrates: 8g | Protein: 19g | Fat: 35g | Saturated Fat: 22g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 9g | Trans Fat: 0.2g | Cholesterol: 122mg | Sodium: 653mg | Potassium: 395mg | Fiber: 1g | Sugar: 5g | Vitamin A: 1196IU | Vitamin C: 19mg | Calcium: 512mg | Iron: 1mg

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