Beautiful lattice works makes this galette almost two beautiful to eat
In a large bowl, add both flours, butter, and greek yogurt. use a fork or a pastry cutter to combine ingredients.
Add the water to the bowl and continue to combine.
Place the dough on plastic wrap and wrap tightly, place in refrigerate for at least an hour or overnight.
Preheat the oven to 400 degrees Fahrenheit.
Use a mandolin to slide the summer squash into ribbons.
Spray a baking sheet and move the crust to the baking sheet.
After an hour/night, take out the dough. Flour your surface and roll our the crust.
Add the three cheeses to the dough. Save some Parmesan to use at the end.
Use the summer squash to make a lattice, weaving each piece under and over.
Pinch the edges into a crust.
Cook in the oven for 35-40 minutes.