This recipe is easily in my top 10 of favorite things I’ve ever made, it is a bit time consuming but it is totally worth it!!
Crust adapted from a Williams-Sonoma Recipe
Filling adapted from Cook’s Illustrated
Pastry
1 1/4 cups all-purpose flour, chilled in the freezer for 30 minutes
1/4 teaspoon salt
8 tablespoons (1 stick) cold unsalted butter, cut into pieces
1/4 cup sour cream
2 teaspoons fresh lemon juice
1/4 cup ice cold water
Filling
2 to 3 small zucchinis, sliced into 1/4 inch thick slices
1 tablespoon + 1 teaspoon e.v.o.o.
1 teaspoon minced garlic (=about 1 medium clove of garlic, minced)
1/2 cup ricotta cheese
1/4 grated parmesan cheese
1/2 cup shredded mozzarella
Glaze
1 egg yolk beaten with 1 teaspoon water
To Make Dough:
Whisk together the flour and salt. Put the pieces of butter in, mix until there are no large chunks of butter; there shouldn’t be any bigger than the size of small peas. Add in the sour cream, mix, lemon juice, mix, then water, and mix until thoroughly worked through the dough, but be careful not to overwork the dough.
Pat the dough into a ball, place back into bowl, cover with plastic wrap and refrigerate for 1 hour.

To Make Filling:
Spread the zucchini slices on top of several layers of paper towels. Sprinkle 1/2 teaspoon salt over zucchini to pull out the water, and let drain for 30 minutes.
After 30 minutes, gently blot off the tops of the zucchini with paper towels. In a small bowl, mix together the e.v.o.o. and garlic, and set aside. In a separate bowl, mix together the ricotta, parmesan, and mozzarella plus 1 teaspoon of the e.v.o.o./garlic mixture. Season with salt and pepper to taste.

To Prepare the Galette:
Preheat oven to 400.
Place the ball on a floured work surface to roll out. I usually put down a few sheets of parchment paper or use a silicone mat. Also, be sure to put flour on your hands and rolling pin. Roll the dough out into about a 12-inch circle. Transfer to a baking sheet lined with parchment paper (this makes it significantly easier to transfer to a plate later), I used a pizza pan. Spread the ricotta mixture evenly onto the dough, leaving a 1 to 2-inch border around. Place the zucchini on top, I did mine in a circular pattern going from the middle to the outside edges. Drizzle the rest of the e.v.o.o./garlic mix on top of the zucchini and fold the dough border over the filling. You will have to pleat the edge to make it “fit nicely.” Brush the egg yolk glaze over the dough.
Bake 30-40 minutes, until the cheese is puffed the zucchini looks slightly wilted, and the crust is golden brown. Let rest for 5 minutes before serving.

Enjoy!!