Preheat oven to 350 F. Line 8 muffin cups with paper baking cups.
In a large bowl, combine oatmeal, yogurt, honey, milk, butter & lime zest; mix well. Let stand for 10 minutes then stir in egg whites until blended.
In a bowl, combine flour, baking powder, baking soda & salt; mix well. Add to oat mixture all at once; stir just until dry ingredients are moistened. (do not overmix).
Place a spoonful of the batter in each cup. Top with a small dollop each of blackberry preserve & lime curd. Divide remaining batter between the 8 cups.
Bake for about 20 minutes or until light golden brown. Cool cupcakes in pan on a wire rack for 5 minutes. Remove from pan & cool completely.
Lime Whip Topping
Prepare as directed on pkg envelope, being sure to measure your lime juice in with the milk (omit the vanilla).
Recipe Notes
I had originally though I would top these cupcakes with a cream cheese frosting but thinking they might be too sweet, I went with the lime whip topping instead.