Storage: Cool leftovers, then store in an airtight container in the fridge for up to 4 days or freeze for up to 3 months. To reheat, microwave individual portions or bake at 350°F for 10–15 minutes to revive the crisp topping.
Variations: Use a mix of berries, swap buttermilk for milk, sprinkle a little brown sugar over the topping before baking, or sub almond extract for vanilla.
Topping ideas: Serve with vanilla ice cream, softly whipped cream, or a drizzle of lemon glaze.
Tip: For a more rustic, textured topping, use half whole wheat flour, or add a pinch of cinnamon to the batter.