Preheat oven to 375 degrees.
Cut the fresh peaches into 1 inch pieces. Add the berries and peaches to a mixing bowl.
Measure in the cane sugar, ¼ cup einkorn flour and cinnamon. Stir until well combined. Set aside the fruit mixture.
Combine the einkorn flour, baking soda, baking powder, cane sugar and salt.
Grate in the butter. Stir until little clumps form.
Add the sourdough starter and stir until a sticky dough forms.
Pour the fruit mixture into a greased 1.5 quart baking dish.
Spoon the cobbler dough by tablespoons full over the fruit.
Bake in a preheated 375 °F oven for 40-50 minutes.
Cobbler is done when edges are bubbly and top is golden brown.
Let cobbler rest 10 minutes before serving.
Serve with fresh whipped cream or vanilla ice cream.