Preheat your oven to 350 degrees.
In a medium bowl mix together peaches, sugar and cornstarch.
Pour mixed peaches into a 9x13 baking dish.
In the same bowl mix together flour, brown sugar, cinnamon and nutmeg.
Add in melted butter and mix with a fork. Mixture will not be completely wet, but make sure it is evenly blended.
Take a handful of topping and press together with your hand. It should clump up.
Sprinkle mixture over the fruit. Leave some larger clumps so it stays crisper while baking.
Bake for 30-35 minutes or until topping is lightly golden brown and fruit is bubbling.
Cool for about 15 minutes before serving. Serve with fresh whipped cream or vanilla ice cream..