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    Zucchini Gratin

    clock-icon75 minutes
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    Author
    Pixicook editorial team

    A rich and creamy zucchini bake with the savory flavors of Gruyère cheese and fresh thyme, topped with a crunchy bread crumb crust.

    Ingredients for Zucchini Gratin

    units in
    USchevron
    units in
    USchevron
    serves
    4 peoplechevron
    serves
    4 peoplechevron

    Unsalted Butter

    tablespoons

    Substitute chevron-down

    Large Yellow Onion, halved and sliced crosswise

    each

    Substitute chevron-down

    Small Zucchini, sliced ½ inch thick crosswise

    0 lb

    Substitute chevron-down

    Kosher Salt

    teaspoons

    Substitute chevron-down

    Freshly Ground Black Pepper

    teaspoons

    Substitute chevron-down

    All Purpose Flour

    tablespoons

    Substitute chevron-down

    Half-and-Half

    cups

    Substitute chevron-down

    Minced Fresh Thyme Leaves

    teaspoons

    Substitute chevron-down

    Ground Nutmeg

    teaspoons

    Substitute chevron-down

    Fresh Bread Crumbs From A Boule, crusts removed

    cups

    Substitute chevron-down

    Grated Gruyère Cheese

    0 oz

    Substitute chevron-down

    How to Make Zucchini Gratin

    1. Preheat Oven and Prepare Dish

    Preheat your oven to 425 degrees and butter an 8 × 10-inch oval gratin dish.

    2. Cook Onion

    In a medium pot or Dutch oven, melt 3 tablespoons of butter over medium-low heat. Add the sliced onion and cook it slowly for about 10 to 15 minutes until it's tender but not browned.

    3. Cook Zucchini

    Add the zucchini to the pot, along with 2 teaspoons of kosher salt. Cover the pot and cook for 15 minutes, then uncover and cook for an additional 10 minutes, stirring occasionally.

    4. Make Cream Sauce

    Sprinkle the flour over the zucchini-onion mixture and stir well. Raise the heat to medium-high and slowly add the half-and-half, stirring constantly. Allow each addition of half-and-half to come to a boil before adding more.

    5. Season Mixture

    Remove the pot from the heat and stir in the thyme, nutmeg, 1 teaspoon of salt, and ½ teaspoon of freshly ground black pepper.

    6. Prepare Gratin Dish

    Spoon the mixture into the prepared gratin dish, flattening it out evenly.

    7. Add Topping

    In a small bowl, combine the bread crumbs and grated Gruyère cheese. Sprinkle this mixture evenly over the zucchini.

    8. Add Butter and Bake

    Cut the remaining 2 tablespoons of butter into small pieces and scatter them on top of the bread crumb mixture. Bake the dish in the preheated oven for about 20 minutes, until the top is browned and the gratin is bubbly.

    9. Let it Sit

    Allow the bake to sit for about 10 minutes before serving, letting the flavors meld and the bake set slightly.


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