Creating a Berry Tart is a delightful journey. Follow these steps to bring your tart to life:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Tart Crust: In a large bowl, combine the flour, granulated sugar, and salt. Add the chilled butter and mix until the mixture resembles coarse crumbs.
3. Add Wet Ingredients: Stir in the egg and vanilla extract until the dough comes together.
4. Form Crust: Press the dough into a tart pan evenly across the bottom and up the sides. Prick the bottom with a fork to prevent bubbling.
5. Bake Crust: Place the tart crust in the preheated oven and bake for about 25-30 minutes or until golden brown. Once baked, remove from the oven and let it cool completely.
6. Prepare Filling: In another bowl, mix the softened cream cheese, powdered sugar, lemon juice, and lemon zest until smooth and creamy.
7. Layer the Tart: Spread the cream cheese mixture evenly over the cooled tart crust.
8. Add Berries: Arrange the fresh mixed berries on top of the cream cheese layer, artfully placing them for a vibrant finish.
9. Chill: Refrigerate the assembled tart for at least 30 minutes to set up.
10. Serve: Slice and serve chilled, topped with whipped cream if desired.

Following these steps will result in a beautifully crafted Berry Tart that you can proudly serve to friends and family.