Over high heat, bring a large pot of water to boil on the stove. Gently rinse the peaches and score an X on the bottom of each peach with a paring knife.
Once the water is boiling, carefully drop the peaches in and cover with a lid for 1-2 minutes, depending on the size of your peaches. Larger peaches will take longer than smaller peaches.
Remove from boiling water and place in a glass bowl in the sink. Run cool water over the peaches.
When they are cool to the touch, peel the skin off starting at the X mark. If ready, the peach skin should come right off, detaching from the peach evenly and easily. If the skin seems stuck, try boiling again for another minute.
Slice the peaches in half and remove the pit. Cut into quarters, then slice the quarters in half. This should give you sixteen peach cubes per peach.
Place all sliced peaches in a large bowl and set aside.
Prep the filling.
Preheat the oven to 350°F.
To the bowl with the sliced peaches, add ½ cup brown sugar. Stir to combine. Set aside while you prep the batter.
Prepare the batter.
Melt the butter using a microwave safe bowl in the microwave, using 15-30 second intervals to ensure the butter does not spill over. (If you don’t have a microwave, you can use a toaster oven or melt it in a small pot on the stove.)
In a clean bowl, mix the flour, sugar, baking powder, salt, and cinnamon.
Allow the butter to cool to the touch, so that it is still liquid but not too hot.
Once the butter is cool, add it to the bowl with the dry ingredients. Add the milk. Stir to incorporate well. Set aside.
Bake the buckle.
Grease a 9×13” baking pan
Pour the prepared batter into the pan, and smooth out to cover evenly.
Add the peaches on top of the batter. If your peaches are extra juicy, use a slotted spoon to scoop the peaches into the pan. This way, you will retain some of the juice but don’t have to use all of it.
Sprinkle sugar on top. Bake at 350 degrees for 35-40 minutes, until edges are beginning to brown and the batter in the middle of the cobbler is no longer runny.
Allow the buckle to cool before serving. This gives the batter time to soak up any juices left behind by the peaches in the baking process, making for an extra tasty buckle!
Serve with vanilla ice cream and a bit of whipped cream. Enjoy!