How to Bake Biscuit Pie with Mixed Berries

Ingredients

• 2 cups all-purpose flour (240 g)
• 1 tablespoon baking powder
• 1/2 teaspoon salt
• 1/4 cup granulated sugar (50 g)
• 1/2 cup unsalted butter, cold and cubed (113 g)
• 3/4 cup buttermilk (180 ml)
• 2 cups mixed berries (e.g., blueberries, raspberries, strawberries) (300 g)
• 1/3 cup granulated sugar (67 g)
• 1 tablespoon cornstarch
• 1 teaspoon vanilla extract
• Zest of 1 lemon