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Julia Child’s Zucchini Gratin

This zucchini gratin involves thinly sliced zucchini layered with cheese and garlic, baked until bubbling and golden with a crispy crust. It has a tender, creamy interior with caramelized edges and a rich, cheesy flavor that accents the delicate vegetable slices.
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Prep Time 20 minutes
Cook Time 40 minutes
Total Time 1 hour
Servings: 4
Course: Main Course
Cuisine: French
Calories: 250
Ingredients Equipment Method Notes

Ingredients
  

  • 3 medium zucchini preferably young and firm
  • 1 cup grated cheese Gruyère or a similar melting cheese
  • 3 cloves garlic minced finely
  • 2 tablespoons unsalted butter melted
  • 1 cup heavy cream or full-fat milk for a lighter option
  • 1 teaspoon fresh thyme chopped, optional
  • to taste salt and pepper

Equipment

  • mandoline slicer
  • Baking dish
  • Mixing bowl
  • Wooden spoon
  • Oven

Method
 

  1. Preheat your oven to 375°F (190°C). Thinly slice the zucchini using a mandoline or sharp knife, aiming for uniform, delicate rounds.
  2. In a mixing bowl, combine melted butter, minced garlic, heavy cream, chopped thyme, salt, and pepper. Whisk until the mixture is smooth and fragrant.
  3. Grease your baking dish with a little butter or non-stick spray. Spread a thin layer of the cream mixture on the bottom to prevent sticking.
  4. Layer the sliced zucchini in overlapping circles or rows, slightly overlapping for even layering. Pour a spoonful of the cream mixture over each layer, and sprinkle with grated cheese.
  5. Repeat the layering process — zucchini, cream, cheese — until the dish is filled, finishing with a layer of cheese on top.
  6. Place the gratin in the oven and bake for about 40 minutes, until bubbling around the edges and a golden brown crust forms on top.
  7. Remove from the oven and rest for 5 minutes. The dish should have a crispy crust and tender, creamy zucchini inside. Garnish with fresh herbs if desired, and serve warm.

Notes

Use a mandoline for the thinnest, most uniform slices. Adjust baking time as needed for thicker or thinner zucchini slices.