The definition of cobbler can mean different things depending on where you're
from. Here is the recipe my mom always used.

2 tablespoons butter
1 cup flour
1 cup sugar
1 teaspoon baking powder
1 cup milk
pinch of salt
4 cups sliced peaces (fresh or canned)

Set oven to 375 degrees. Soften butter and spread over the bottom and sides of
a 1 quart baking dish. Combine the remaining ingredients except the peaches
and pour into buttered baking dish. Spread peach slices over batter. Other
fruits may be used in place of peaches. Bake for 45 minutes. The batter rises
through the fruit to form a crust on top.