Kue Lembaran Blackberry Lavender yang diaduk

Bahan-bahan (12 porsi)

• 6 cups fresh or frozen blackberries
• 1/2 cup honey
• 1 tablespoon lemon juice
• 1 -2 tablespoons dried lavender
• 1 cup melted coconut oil
• 1/2 cup sour cream
• 3 large eggs
• 1 1/2 cups granulated sugar
• 1 tablespoon vanilla extract
• 1 cup milk
• 3 cups all purpose flour
• 1/2 teaspoon baking soda
• 1 1/2 teaspoons baking powder
• 1 teaspoon kosher salt
• 2 sticks (16 tablespoons) salted butter, at room temperature
• 1 1/2 cups powdered sugar
• 6 ounces white chocolate, melted and cooled
• 1 teaspoon vanilla extract