Pre-heat the oven to 350°F.
Grease a 9-inch x 13-inch baking dish.
Place doughnut cubes in the baking dish and spread evenly.
Add chopped peaches on top of the doughnuts.
In a medium saucepan, over medium heat, melt butter.
Add sugar, cinnamon, nutmeg and flour; stir until ingredients are combined and the mixture is thickened.
Pour the butter and sugar mixture over the doughnuts and peaches.
Sprinkle the brown sugar over the top.
Bake in the pre-heated oven for 30 minutes.
Serve warm with a scoop of ice cream or whipped cream.
