Creating your Whimsical Unicorn Berry Pie is simple if you follow these easy steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Pie Crust: Roll out your pre-made pie crust and fit it into a 9-inch pie pan. Trim any excess dough hanging over the edges.
3. Mix Berries: In a large bowl, combine the mixed berries, sugar, cornstarch, vanilla extract, and lemon juice. Gently toss until the berries are well coated.
4. Fill Pie Crust: Pour the berry mixture into the prepared pie crust, spreading it evenly.
5. Bake: Place the pie in the preheated oven and bake for 30-35 minutes, or until the filling is bubbly and the crust is golden brown.
6. Cool: Once baked, remove the pie from the oven and let it cool on a wire rack for at least 1 hour. This allows the filling to set.
7. Serve: Once cooled, cut into slices and serve with a dollop of whipped cream if desired.

With these straightforward instructions, you’ll have a stunning Whimsical Unicorn Berry Pie ready to enchant your taste buds!