Preheat your oven to 350°F.
This is the perfect temperature for baking the cobbler without overcooking the fruit.
Prepare the peaches by peeling, pitting, and slicing them.
Combine them with sugar, lemon zest, and lemon juice in a large bowl, and set aside.
In another bowl, mix the flour, brown sugar, baking powder, and salt.
Cut in the butter until the mixture resembles coarse crumbs.
Spread the peaches in a baking dish and distribute the crumb mixture evenly over the top.
Drizzle boiling water over the topping to help it form a crust as it bakes.
Bake for 40-45 minutes, until the topping turns golden brown.
The peach mixture should be bubbling through the edges.