Garlic Butternut Squash & Zucchini Gratin

With winter around the corner, this Garlic Butternut Squash & Zucchini Gratin recipe is the ultimate comfort food. It showcases roasted butternut squash and zucchini with creamy brie on top.

Why it works

Cooking garlic in bacon grease adds a hearty aroma to the gratin. I LOVE the color combination of the bright orange butternut squash and deep green zucchini. It’s a feast for the belly and for your eyes.

Garlic Butternut Squash & Zucchini Gratin

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The brie and garlic bacon toppings elevate this gratin into a rich comfort food that’s ideal during the current fall to winter transition. This is a wonderful side dish that goes well with roast chicken or even for breakfast the next day.
Prep Time: 15 minutes
Cook Time: 25 minutes
Total Time: 40 minutes
Course: Breakfast, Side Dish
Cuisine: American, Anna&Alex
Keyword: 10 ingredients or less, baking, batch-cooking, comfort, family-friendly, freezer-friendly, helping-hands, party
Servings: 6 people
Calories: 128kcal
Author: Anna Rider


  • Peeler
  • Chopping Board
  • Knife
  • Baking Tray
  • Frying Pan
  • Casserole Dish


  • 1.5 heads (1.5 heads) garlic
  • 3 pounds (1.36 kg) Butternut Squash, About 2 butternut squashes
  • 1 pound  (453.59 g) zucchini
  • wedge (1 wedge) Brie
  • 4 slices  (4 slices ) Bacon
  • Chives, For garnish


  • Collect all the ingredients.
    Butternut Zucchini Bacon Brie Gratin ingredientsPin

Butternut Squash and Zucchini

  • Preheat the oven to 350ºF (175ªC).
  • Peel the butternut squash.
    Peel the butternut squash.Pin
  • Cut the butternut squash into 1/2 inch (1 cm) slices.
    Cut the butternut squashPin
  • Deseed the squash.
    Deseed the squash.Pin
  • Cut the ends of the zucchini. Cut each zucchini into long slices, approximately the same thickness as the squash.
    Cut each zucchini into long slices,Pin
  • Arrange the squash and zucchini in baking trays.
    Arrange the squash and zucchiniPin
  • Season with salt and pepper.
    Season with salt and pepper.Pin
  • Put the baking trays with the squash and zucchini into the preheated oven for 20 minutes.
    baking trays with the squash and zucchiniPin

Bacon, Garlic, and Brie

  • While waiting for the squash and zucchini to bake, prepare the garlic. Peel and roughly chop the garlic.
    Peel and roughly chop the garlic.Pin
  • Roughly chop the bacon slices.
    Roughly chop the bacon slices.Pin
  • Heat a large fry pan over medium heat. Pan fry the chopped bacon and render the fat, about 5 minutes.
    Pan fry the chopped baconPin
  • Make a well in the frying pan. Add the garlic. 
    Fry the garlic in the bacon greasePin
  • Fry the garlic in the bacon grease until the garlic and bacon are golden, about 5 minutes.
    Fry the garlic in the bacon greasePin

Assembling Together

  • Remove the baking trays from the oven when squash and zucchini are cooked through. Test that they are cooked by piercing with a fork. The fork should slide through with minimal or no resistance.
  • In an 8x8 baking dish, layer the squash and zucchini in alternate layers.
    layer the squash and zucchiniPin
  • Slice the brie into thin slices, about 1/2 inch (0.5 cm). Top the baking dish with the brie slices.
    Top the baking dish with the brie slices.Pin
  • Add the garlic and bacon toppings on top of the brie slices in the baking dish.
    Add the garlic and bacon toppingsPin
  • Place the baking dish back into the oven, until the brie melts.
  • Serve with a sprinkle of chives.
  • Enjoy your Garlic Butternut Squash & Zucchini Gratin.
    Garlic Butternut Squash & Zucchini GratinPin


Credit: I got inspiration for this gratin dish from a recipe called Butternut au Reblochon on Marmiton.


Calories: 128kcal | Carbohydrates: 31g | Protein: 3g | Sodium: 21mg | Potassium: 1023mg | Fiber: 5g | Sugar: 6g | Vitamin A: 24260IU | Vitamin C: 63.4mg | Calcium: 134mg | Iron: 2mg
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Anna looking down chopping vegetables
About Anna Rider

Hi! I'm Anna, a food writer who documents kitchen experiments on with the help of my physicist and taste-testing husband, Alex. I have an insatiable appetite for noodles 🍜 and believe in "improv cooking".

2 thoughts on “Garlic Butternut Squash & Zucchini Gratin”

  1. 2 stars
    The cheese didn’t melt very well! And would recommend cutting the veggies thinner for more of a gratin. I added rosemary instead of chives and it had a nice warmth.

    • Hi Amanda,
      Yes thanks for that feedback. If I ever update this recipe, I’ll take your comments into account for how to improve this recipe.


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