My go to Cobbler recipe using any fruit (apple, peach, blackberries, blueberries, strawberries, even pears) is 1:1:1:1
EASY COBBLER
1 stick butter in 9x9 square dish
1 cup self-rising flour
1 cup sugar
1 cup milk
2 cups fruit (sometimes I use 2 1/2 cups)
Preheat oven to 350. Put butter in 9 x 9 baking dish and melt. Mix flour and sugar together and then stir in milk.Pour over butter. Pour fruit over batter. Sprinkle a little sugar on top of fruit (1/8 - 1/4 cup).
With peaches, apples and pears, I sometimes sprinkle a little cinnamon on top of fruit also.
ENJOY!