Blueberry Hand Pies - Air Fryer or Oven!

Ingredients

• 1 1/2 cup (240 g) fresh blueberries
• 1 Tablespoon (14 g) unsalted butter
• 3 Tablespoons (35 g) light brown sugar
• 1/8 teaspoon salt
• 1/2 teaspoon (2 g) vanilla extract
• 1 Tablespoon (15 mL) water
• 1 unbaked pie crust , rolled into a 10″ x 13″ rectangle
• 1 egg
• 2 teaspoons (10 ml) water