I stumbled across this recipe - can't for the life of me remember where. I made them last night and they are just too, too good.

BANANA PEANUT BUTTER WHOOPIE PIES

2 cups all purpose flour

1/2 tsp. baking powder

1/2 tsp. baking soda

1/2 tsp. salt

3/4 cup mashed banana

1/2 cup plain fat-free yogurt (I used vanilla flavored)

1/2 cup sugar

1/2 cup brown sugar, packed

1 egg

1/2 tsp. vanilla

Preheat the oven to 350° F.

In a medium bowl, whisk together flour, baking powder, baking soda and salt. In a separate bowl, mix together banana and yogurt. In a large bowl, use an electric mixer to combine butter and both sugars completely, ten add egg and beat until just combined. Add vanilla.

Alternately mix flour and banana mixture into creamed butter until just combined, beginning and ending with flour mixture. Scoop mixture into a pastry bag fitted with a 1/4-inch tip. (I used my cookie scoop.)

Line a baking sheet with parchment paper and pipe batter into 1-1/4 inch rounds. Bake in oven just until the edges are slightly golden brown--you want the resulting cake to be soft and moist, not crispy (about 10-12 minutes). Transfer parchment to cooling rack and cool completely.

Filling:

16 oz. cream cheese, softened

1 cup confectioner's sugar

1/2 tsp. vanilla

1/2 cup creamy peanut butter

In a medium bowl, use and electric mixer to beat cream cheese until fluffy. Add sugar, vanilla and peanut butter and mix until combined. Spoon mixture into a pastry bag with the end cut off.

Pipe filling onto the flat side of half of the cakes and then top with the other half of the cakes. Drizzle with chocolate glaze.

Chocolate glaze:

1/2 cup semisweet chocolate chips

2 Tbsp butter

1 Tbsp corn syrup

Melt all ingredients in double boiler, or a glass bowl over a pot of simmering water. Mix until smooth. Do not over heat, or it will become grainy. Drizzle over whoopie pies.