Combine the blueberries, sugar, flour, lemon zest and lemon juice in a large bowl. Toss together gently and set aside.
Line a large baking sheet with parchment paper or a silicon baking pad. Pre-heat the oven to 375 degrees F. When the dough is malleable, but still firm use your hands to form a ball with one piece of dough, keeping the second disk of dough in the refrigerator.
Flatten the ball and place between 2 pieces of plastic wrap or parchment paper. Roll out into a circle about 9-10 inches in diameter. Transfer to the refrigerator. Continue to roll out the remaining dough. Place a circle of dough on the baking sheet, leaving room for the other crostata. Spoon about 1/2 cup of the berry mixture onto the circle, leaving at least 1-inch border. Bring the edges of the dough over the top to envelop the berries. Using your hands, fold in the edges, pressing gently and patching any holes. Repeat with the remaining dough and berries. Chill both tarts for about 20 minutes before baking.
Bake until the crust turns golden brown and the fruit is bubbling, about 25 minutes. Let the tarts set for 10 minutes before serving. Serve your tarts warm or at room temperature with vanilla ice cream or homemade whipped cream.