Homemade Strawberry Pop-Tarts

Ingredients

• 2 cups all-purpose flour
• 2 tablespoons sugar
• Dash salt
• 1 cup cold unsalted butter, cubed
• 1 large egg, room temperature
• 2 to 4 tablespoons 2% milk
• 1/2 teaspoon vanilla extract
• FILLING:
• 1/2 cup seedless strawberry jam
• 1 tablespoon cornstarch
• 1/4 teaspoon vanilla extract
• 1 large egg
• FROSTING:
• 1-1/4 cups confectioners' sugar
• 2 tablespoons 2% milk
• Nonpareils, optional