Peanut Butter Whoopie Pies (with traditional filling option)

I have been on a whoopie pie spree lately, and thought I would update this post with some new found wisdom. Everyone seems to love them because they are so silly and different. I included the traditional filling option at the end of this post. This peanut butter chocolate version comes from "Martha Stewart's Cookies" book, thanks for the recommendation, Alexis! Plus, who can resist the name?

These tasty treats are two chocolatey, fluffy cookies with peanut butter cream sandwiched between them. Yum.

Peanut Butter Whoopie Pies

~Print Recipe~

What's in it

For the cookies:

3 1/2 C flour

1 1/2 C unsweetened cocoa powder

1 Tbl baking soda

1 tsp baking powder

1 tsp salt

2 sticks (1 C) unsalted butter, room temperature

2 C sugar

2 large eggs

2 C buttermilk, room temperature

2 tsp pure vanilla extract

for the filling:

1 1/3 C natural, creamy peanut butter

1 C (2 sticks) unsalted butter, room temperature

1 1/4 C confectioners sugar

coarse salt

How it's made

1. Preheat oven to 400 degrees. Line two baking sheets with parchment paper. Sift together flour, cocoa, baking soda, baking powder, salt. In a separate large bowl, with an electric mixer beat butter and sugar on med speed until fluffy. Add eggs, buttermilk, and vanilla. Beat until well combined. On low speed, gradually add the dry ingredients. Mix until combined.

2. Drop 1 1/2 Tablespoons of batter onto prepared baking sheets, spacing 2 in. apart. Bake until set, about 8 minutes, rotating halfway through. Cool completely on a wire rack. (I have found using a pastry bag and larger tip makes it much easier to handle the batter, and and makes much more uniform cookie sizes. It's also easier putting the filling on the cookies. See first picture up top versus second picture here.)

3. For filling, beat peanut butter and butter on high speed with an electric mixer until smooth. Reduce speed to low and add confectioners sugar. Mix until combined. Raise speed to high, and mix until fluffy and smooth, about 3 minutes. Season with salt, if desired.

4. Assemble the cookies: Spread 1 heaping Tablespoon filling on the flat side of one cookie,. Sandwich with another cookie. Repeat for all cookies.

Enjoy!

Whoopie Filling Alternative

Traditionally whoopie pies have a marshmallow-y filling, and often are rolled in sprinkles for decoration. I found a recipe and tried it for a bbq, but the filling melted in the 100 degree heat. It would be great for Bay Area weather!

Beat together until smooth:

1/2 C butter softened

1 1/4 C powdered sugar

2 C marshmallow fluff/cream

1 tsp vanilla

Roll in sprinkles for a fun spin.

Pineapple Upside-Down Cake

This cake is so easy to make, and so nostalgic for many of our parents. The best part is flipping the cake upside down out of the skillet and seeing the pretty arrangement of pineapples on top. This recipe is from Moosewood, which is why it calls for mashed bananas, to reduce the amount of fat. I made this for Andy's dad's 60th birthday on request, and Mary Ann's birthday as well.

What's in it:

20 oz can unsweetened sliced pineapples, undrained

1/4 C butter

1/2 C sugar

2 eggs

3/4 C packed brown sugar

1/2 C buttermilk 

1/2 C mashed banana

3 Tbl vegetable oil

1 tsp vanilla

1/2 tsp cinnamon

1/4 tsp nutmeg

1/2 tsp baking soda

1/2 tsp baking powder

1/2 tsp salt

1 1/4 C flour

How it's made:

Drain the pineapple, reserving 1/3 C of juice.  In a 10" cast iron skillet, or oven proof skillet, heat and melt butter on med heat. Add sugar and cook stirring constantly until sugar starts to turn brown (3 min).  Remove from heat and keep stirring.  Add drained juice (1/3 C) and return pan to low heat and stir until sugar is melted again.  Arrange pineapple slices close together in a decorative layer on the bottom of the skillet, reserving any leftovers.

For cake batter combine wet ingredients in one bowl and sift together dry ingredients in another.  Add dry to wet and stir until mixed.  Pour batter over pineapple slices and top with any reserved slices.  Bake for 30-40 min until knife inserted comes out clean.  Cool in skillet for at least 10 minutes, then invert it onto a serving plate, so slices are facing up.