1½cupsall-purpose flourI used all-purpose Khorasan flour
½cupcornmeal
1tspraw cane sugar
1tspsea salt
½cupcold, salted butter, cubed
⅓cupice cold water
3tbspavocado oil
For the filling
1½ - 2lbsHeirloom tomatoes and cherry tomatoesAn assortment of different kinds, works well.
1tbspavocado oil
4green onions, thinly sliced
3clovesgarlic, minced
1earfresh corn, kernals cut off the cob
2ozgruyere cheese, shredded
3tbspparmesan cheese, grated
sea salt and pepper
2tbspfresh basil, thinly sliced for topping
1egg + 1 tbsp milk or waterfor an egg wash
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Instructions
Make the crust
In the bowl of a food processor, combine the flour, cornmeal, sugar, and salt. Pulse to mix, then add the cubed butter and pulse again until the butter is pea-sized.
Turn the dough out onto a work surface and press into a rectangular disk (roughly 4" x 8").Wrap in plastic wrap and refrigerate for at least 1 hour or up to 1 day.
Make the galette
Core the larger heirloom tomatoes and then cut them into thick slices about ⅓" in thickness. Place the tomato slices on a couple of layers of paper towels, then cover with another layer of paper towels Slice the cherry tomatoes in half and lay them on paper towels to drain, cut side down. Let the tomatoes drain for 15-20 minutes while you prepare the remaining filling ingredients.
In a small skillet, heat the avocado oil over medium-high heat. Add the green onions and cook until softened, about 3 minutes. Then, add the garlic, corn, salt, and pepper, and cook for an additional minute before removing from the heat.
Preheat the oven to 375℉.Place a piece of parchment paper on the counter, lightly dust with cornmeal, and roll out the chilled galette dough on the parchment to form a 9" x 14" rectangle.
Distribute the green onion and corn mixture over the crust, leaving a 2" border. Next, sprinkle the cheeses over the top, then arrange the tomato slices in an even layer over the cheeses.Fold over the edges of the dough towards the middle of the galette.
Brush the edges of the dough with the egg wash and place in the preheated oven to bake for 35-40 minutes, until golden brown. *If the galette crust starts to brown quickly, loosely place a piece of foil over the top.After baking, sprinkle the basil over the top. This galette is great served hot or at room temperature when entertaining.