Preheat oven to 350F, spray a 6 hole donut pan and set aside.In a bowl mix your dry ingredients for donut batter, add pumpkin puree, egg whites, vanilla and milk and stir well.In a small bowl mix your 2T of brown sugar and flour and spices, slowly stir in your melted margarine until you have a crumble texture.Pour your donut batter into your donut pan, top with crumb mixture.Bake in oven for 14-16 minutes. Let cool for 5 minutes then using a knife to scrape around edges remove from pan... Optional to drizzle with vanilla icing, I used 1 Tbsp of betty crocker icing for all 6, just piped out of a bag, it wont add points unless you eat 2 or more at a time..