Yes, you can! The best way to make it ahead is to make the filling and topping separately. Then assemble the cobbler when you're ready to bake it. When it's time to bake, remove the filling and topping from the refrigerator. Allow the biscuit dough topping to sit at room temperature while the peaches bake for 15 minutes. Then add the topping and bake the cobbler for 40 minutes.