Preheat oven to 375 degrees Fahrenheit.

Place the crumb ingredients in a large bowl and mix with your hands until crumb consistency forms.

Place a small saucepan on medium heat and add brown sugar, cornstarch, cinnamon, vanilla sugar, and sliced peaches. Cook on medium until the peaches completely defrost. Stir the peaches and sauce, then raise the heat to high and bring to a boil.

Place the peaches and sauce in an oven-to-table dish and sprinkle the crumbs on top. Bake for 25 minutes or until golden brown.