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    Home » Vegetables

    Crispy Buttery Parmesan Roasted Zucchini

    Published: Oct 10, 2025 · by Natalie · This post may contain affiliate links. Please read our privacy policy. · Leave a Comment

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    Parmesan Roasted Zucchini is stuffed with sautéed onions, garlic, two cheeses, and buttery breadcrumbs. A delicious side or light meal for any day of the week.

    Golden brown Parmesan roasted zucchini on a baking sheet.Zucchinis are one of my favorite vegetables. They have a mild flavor that’s delicious grilled with a simple drizzle of olive oil and a sprinkle of salt.

    They're great stuffed, added in salads, used in a casserole, or made into a frittata. Basically, they're good eats.

    Have an abundance of zucchini from your gardens? Put it to use by making some delicious dishes like these Parmesan roasted zucchini, my zucchini frittata, or keep some grated in the freezer for making zucchini bread.

    If I'm feeling generous, I give a few away. I have to admit, it’s not often. When you try these Parmesan roasted zucchinis, you'll know what I mean.

    How to make Parmesan roasted zucchini

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    I often use large zucchinis to make this dish because we tend to grow them large in the garden. The seeds need to be scraped out because we need to create a cavity for the stuffing.

    The larger the cavity, the more they're filled with buttered, cheesy breadcrumbs. That’s where it’s at my friends.

    Different sized zucchini on a cutting board.
    Four zucchini halves drizzled with olive oil on a baking sheet.

    For smaller sized zucchini that’s about 8 inches long (still above average...), use the lower end of the initial roasting time - about 10 minutes - because you don’t want them too soft...are we still talking about zucchini?

    Anyway, for medium sized zucchini that’s about 10 - 12 inches in size, roast for about 12 minutes.

    For large ones that are 12+ inches, roast for 15 minutes. Is it getting hot in here???

    Stuffing ingredients in a bowl for the zucchini.
    Stuffed zucchini ready for roasting.

    These are stuffed with a mixture of panko bread crumbs, mozzarella cheese, Parmesan cheese, and chopped fresh parsley, that's combined with buttery sautéed onions and garlic. Doesn't that sound good?

    If any crumbs overflow onto the baking sheet, that's fine. Those crisp up in the oven and we fight for those crispy bits.

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    Roast these for about 10 to 15 minutes or until they're crispy and golden. You are going to love these Parmesan roasted zucchini. Yup, you are.

    You can eat this as a meal served with a simple salad or as a side. You’re gonna love this parmesan roasted zucchini. Oh yes you are.

    Golden brown Parmesan roasted zucchini on a baking sheet.

    Don't they look spectacular? When you take a bite, your eyes may roll back and you may involuntarily let out a slight moan. Yup. I've seen it happen with my own eyes. Guests moaning all over the place!!

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    Parmesan roasted zucchini on a baking sheet.

    PARMESAN ROASTED ZUCCHINI

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    Parmesan Roasted Zucchini is stuffed with sautéed onions, garlic, two cheeses, and buttery breadcrumbs. A delicious side or light meal for any day of the week.
    This makes enough stuffing for 2 pounds of zucchini.
    Prep Time: 10 minutes minutes
    Cook Time: 25 minutes minutes
    Total Time: 35 minutes minutes
    Servings: 4
    Author: Natalie Gregory

    Equipment Used

    Baking Sheet
    Large Bowl

    Video

    Ingredients

    • 2 pounds zucchini See Notes 1
    • 2 tablespoons lemon juice
    • Extra virgin oil for drizzling
    • 6 tablespoons butter See Notes 2
    • 1 sweet onion (I use Vidalia) diced (medium in size - about 1 cup)
    • 4 garlic cloves minced
    • 1 cup panko breadcrumbs
    • ½ cup mozzarella shredded
    • ½ cup grated Parmesan cheese
    • ¼ cup chopped parsley
    • Kosher salt to taste
    • ½ teaspoon pepper
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    Instructions

    • Preheat oven 425℉.
    • Slice the ends of the zucchini, then slice each one in half lengthwise. Scoop out the seeds using a spoon, creating a small channel for the stuffing. Set zucchini halves on a baking sheet. You can line a baking sheet with parchment for easy cleanup if you wish.
    • Drizzle cut side of zucchini with olive oil and lemon juice. Sprinkle evenly with a good pinch of salt. Place them cut side down and roast them for 10 - 15 minutes. See Notes.

    Meanwhile, prepare the filling:

    • In a skillet over medium high heat, melt the butter and saute the onions until softened, about 5 - 8 minutes. Season with a pinch of salt. Add garlic and cook until fragrant. Remove from heat.
    • In a bowl, mix together the breadcrumbs, cheeses, and parsley. Add the onion mixture and toss until the crumbs are coated. Taste and season with additional salt and pepper.
    • Set the roasted zucchini cut side up and spoon the mixture evenly into them.
    • Bake for an additional 10 - 15 minutes or until the breadcrumbs are crispy and golden.

    Notes

    Note 1: 1 large, 2 - 3 medium, or about 3 - 4 small
    This is enough stuffing for 2 pounds of zucchini.
    If you use smaller-sized zucchini that’s about 8 inches long, use the lower end of the initial roasting time - about 10 minutes - because you don’t want them too soft. If using medium/large-sized, which is about 10 - 12 inches, roast for about 12 minutes. If using large ones like I do from my garden - 12+ inches, roast for about 15 minutes.
    Note 2: You can use olive oil instead of butter.
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    Nutritional Information

    I don't post the nutritional value because I don't trust the accuracy of the nutritional apps. I’m not a nutritionist and don't want to post misinformation.

    Did you make this recipe?I would love to hear your feedback. Tag me @thegeneticchef!

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