¼cupparmesan cheese, freshly grated, plus 1 tablespoon
1egg, slightly beaten with 1 teaspoon of water
Instructions
Crust
Place flour, cornmeal, sage, thyme, salt and pepper into bowl of a food processor. Pulse until combined.
Add cubed butter, and pulse until mixture resembles coarse meal.
In a small bowl, add vinegar to grape juice. With machine running, slowly add the vinegar/grape juice mixture. Dough will begin to pull away from the sides of the bowl when combined.
Transfer to floured work surface and gently knead a few times to form into a 6-inch disc. Wrap in plastic and chill at least 1 hour and up to 2 days.
Filling
In a large sauté pan, heat olive oil over medium-high heat. Add tomatoes and grapes. Sprinkle with salt and pepper.
Cover pan and stir occasionally for 3-5 minutes until tomatoes’ and grapes’ skin start to blister and brown a bit. Transfer to a plate to cool.
Meanwhile, in a medium bowl, beat goat cheese, ricotta cheese, and lemon zest with a handheld electric mixer until well combined.
Mix in basil, thyme, and nutmeg. Season with salt and pepper. Set aside.
Assembly
Let dough sit out on counter 20 minutes or so before assembling (it may need more time if refrigerated overnight or longer).
Preheat oven to 400°F. On a floured surface, roll out dough into a 12-inch circular shape, about ¼-inch thick. Galettes are meant to be imperfect so don’t sweat it if it’s not uniform.
Transfer rolled dough onto a parchment paper lined, rimmed baking pan either via a rolling pin or gently folding into quarters then unfolding onto pan.
Spread cheese mixture over dough, leaving about a 2-inch border. Pile tomato-grape mixture on top of cheese with a slotted spoon or your hands, leaving excess liquid on the plate. Sprinkle ¼ cup parmesan over tomatoes and grapes.
Gently pleat the crust over the filling as you go to seal the filling inside the dough. The center will be open.
Brush egg wash generously over folded crust. Sprinkle crust with remaining tablespoon of parmesan cheese and a couple turns of the peppermill.
Bake 30 minutes, until crust is puffed and golden brown, and tomatoes and grapes are blistered but still hold their shape.
Remove from oven and let cool 15 minutes. Garnish with additional thyme and basil. Cut into wedges and serve. Enjoy warm or at room temperature.