Blackberry Tart Recipe | Give Me Cookie

Ingredients

• 1 1/2 cups All-purpose flour
• 1/2 cup Unsalted butter
• 3/4 cup Granulated sugar
• 1/4 teaspoon Salt
• 3 tablespoons Cold water
• 2 cups Blackberries
• 2 tablespoons Cornstarch
• 1 teaspoon Lemon zest
• 1 teaspoon Vanilla extract
• 1 Egg yolk