To prepare the sweet griddled peaches with honeyed vanilla pod mascarpone and walnut sugar recipe, you will first need to prepare your ingredients. In a large bowl, mix together the flour, baking powder, sugar, salt, and cinnamon. Add the butter and mix until the mixture resembles coarse crumbs. Gradually add the milk and stir until it's completely incorporated. Pour the batter into the prepared pan and bake for 20 minutes. Remove the pan from the oven and allow it to cool for 5 minutes before serving.