Freezing. You can freeze the baked cobbler for up to 3 months. After baking, let the cobbler cool completely, then transfer it to freezer-appropriate containers. Label the contents and include the current date. Freeze for up to 6 months. To reheat thaw overnight in the fridge. Place in an oven-safe dish and bake for about 20 minutes in a 350ºF preheated oven.Reheating. Peach Cobbler is so good warmed up! To reheat the cobbler, use the microwave and reheat in 30-second increments. If you want to reheat it in the oven, bake at 350ºF for 10 minutes, if at room temperature, and about 20 minutes if the cobbler is chilled.No buttermilk? You can make your own buttermilk substitute at home. Just add 1 teaspoon of white vinegar or lemon juice to a liquid measuring cup, then add enough cold whole milk to reach 1/2 cup. Give it a good stir and let it sit for 5 minutes. Your homemade buttermilk is now ready to use in your recipe, even if it looks a little curdled. I do like to peel my peaches. To do this easily cut a star shape on the bottom of the peach and place them in boiling water for 30 seconds, remove them to a bowl of ice water. The skin will peel off easily.