A rustic, free-form apricot galette with buttery pastry and sweet, juicy apricots. This elegant yet simple dessert showcases the natural beauty of fresh apricots.

Preheat oven to 425°F (220°C). Line a baking sheet with parchment paper.
Roll out pie crust on the prepared baking sheet into a 12-inch circle. Don't worry about making it perfect - rustic is the goal!
In a bowl, toss apricot halves with 1/4 cup sugar, cornstarch, vanilla, and lemon zest.
Arrange apricots cut-side down in center of crust, leaving a 2-inch border. Dot with butter pieces.
Fold edges of crust up and over apricots, pleating as needed. Brush crust with beaten egg and sprinkle with coarse sugar.
Bake 30-35 minutes until crust is golden brown and apricots are tender and caramelized.
Warm apricot jam and brush over hot apricots for a beautiful glaze. Cool 15 minutes before serving.
Choose apricots that are ripe but still firm - they should give slightly to pressure but not be mushy. If apricots are very sweet, reduce sugar to 2-3 tablespoons.
Add 1/4 cup sliced almonds over apricots before baking. Try mixing apricots with fresh berries like raspberries or blackberries.
Best served warm the day it's made. Store covered at room temperature for 1 day or refrigerate for up to 3 days.