Preheat oven to 350 degrees and grease a 12" pizza pan. Combine cake mix, 1 cup oatmeal and 6 Tbsp. butter until crumbly. Reserve 1 cup for topping. Add egg to crumbs, press onto prepared pan. Bake 12 minutes or until golden brown.
Mix 1/4 cup oatmeal, 2 Tbsp. butter, nuts, brown sugar and cinnamon to reserved crumbs. Put fruit on cooled crust and top with topping.