Thaw and drain frozen peaches thoroughly to prevent a watery filling and soggy topping., Do not stir the layers once assembled to achieve a classic cobbled crust and juicy filling., Broiling at the end adds a crispier top; watch carefully to avoid burning., Fruit swaps include nectarines, apricots, plums, or berries; adjust sugar with tart fruits., Gluten-free option: replace all-purpose flour with a 1:1 gluten-free flour blend., Vegan/dairy-free swaps: use vegan butter or coconut oil, plant-based milk and flax egg or applesauce instead of egg., Flavor upgrades: almond extract, lemon zest, or a splash of bourbon add brightness or warmth., Topping variations: streusel topping or biscuit spoonfuls instead of batter; or switch to a crisp with oat and brown sugar crumble., Serve with vanilla ice cream, salted caramel sauce, toasted almonds, or whipped cream for special finishes., Best served warm; leftovers refrigerate well for 2-4 days and reheat at 350°F until warm, optionally broiling briefly for crispness.