Step 1

Add the flour, salt, sugar, and lemon zest to the bowl of a food processor and pulse to mix the ingredients. Add the cold butter cubes and pulse again. You should have small coarse pieces.

Step 2

Next, add the egg and pulse just a few times until the dough is formed.

Step 3

Place the dough onto a work surface and knead for a few seconds only. You just want to bring the dough together and form 1 ball.

Step 4

Wrap the ball in plastic wrap and refrigerate for 1 hour before using. The dough can be made 2 days ahead of time.

Step 5

Slice your apples into quarters then slice into 1/8" thick slices, or slice using a mandoline.

Step 6

In a large bowl add the lemon juice to the apples.

Step 7

In a small bowl whisk together the brown sugar, cinnamon, and flour.

Step 8

Mix the sugar mixture with the apple slices until combined.

Step 9

Preheat the oven to 375f and place the rack in the center of the oven. Remove the dough from the refrigerator and allow it to sit for 10 minutes.

Step 10

On a lightly floured surface, roll out the dough to a 12-inch circle, about 1/3-inch thick, and transfer to a parchment paper-lined baking tray.

Step 11

Arrange the apples in the center of the dish leaving at least 1 - 1 1/2 inches around the perimeter.

Step 12

Begin to gently fold over the edges of the dough while leaving the center exposed.

Step 13

Brush the beaten egg wash around the edge of the dough with a pasty brush and sprinkle with the granulated sugar.

Step 14

Bake for 40-45 minutes or until the edges are crisp and golden. Allow the crostata to settle for 10 minutes prior to serving. Enjoy!