Preheat the oven to 220 deg C and line a 9 inch loaf tin by brushing with butter and lining with baking paper, set aside.
In a small mixing bowl, add the dry ingredients for the crumble and stir together. Add in the butter and using a fork mix together until you have chunks and clumps. Set aside.
In a large mixing bowl add the brown butter, castor sugar, yogurt, buttermilk, egg, vanilla, almond extract and whisk until smooth.
Add in the flour, baking powder, baking soda, most of the chopped peaches, salt, cinnamon powder and fold together with a rubber spatula.
Transfer the batter to the lined tin and smooth out the top. Add the remaining peaches and top with the crumble mixture.
Bake for 6 mins at 220 deg C, then reduce the temperature to 170 deg C and continue baking for 40 minutes or until a toothpick inserted into the center comes out clean.
Allow it to cool until it is easier to handle, remove from the tin, slice and serve with a dusting of powdered sugar.