Prepare Dutch Crust by mixing all crust ingredients together until crumbly; set aside.
In large bowl, mix flour, oats, sugar, baking powder and baking soda. Add fruit; stir to coat.
In a small bowl, beat eggs with fork; beat in buttermilk and butter. Add to flour mixture; stir until just blended. Fill greased muffin tins 2/3 full; top with Dutch Crust. Bake in preheated 400 degree F oven for 15-20 minutes, or until toothpick inserted in center comes out clean.