Peach Blueberry Cobbler

Bahan-bahan (8 porsi)

• 8 cups thinly sliced fresh peaches (about 7-8 medium-size peaches)
• 2 cups fresh blueberries
• 1 teaspoon fresh lemon juice
• ¼ cup white sugar
• ¼ cup brown sugar
• ¼ teaspoon ground cinnamon
• ¼ teaspoon ground cardamom (optional)
• 2 teaspoons cornstarch
• 2 cups all-purpose flour
• ½ cup white sugar
• ½ cup brown sugar
• 2 teaspoon baking powder
• 1 teaspoon kosher salt
• 12 tablespoons COLD butter (grated)
• ½ cup boiling water
• ⅓ cup white sugar
• 2 teaspoons cinnamon