Chocolate Whoopie Pie Monsters

“Made with cake mix, these Chocolate Whoopie Pie Monsters turn a basic chocolate whoopie pie recipe into a fun Halloween treat that the whole family will love. Stuffed with a creamy marshmallow filling, these monster treats are hard to resist!”

- The Delicious Spoon

Devil's Food Cake Mix

key ingredient:


For the Cake – Devil's Food Cake Mix – vegetable oil – eggs – chocolate instant pudding mix – warm water For the Filling – unsalted butter – powdered sugar – vanilla – salt – marshmallow fluff – green food colouring or to desired colour – green sprinkles – googly eye candies (optional)

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Chocolate Whoopie Pie Monsters


22 Whoopie  Pies


Dessert, Treat, Snack

prep time

45 Minutes



1.  Preheat the oven to 350°F. Add all of the cake ingredients to a large bowl and beat with a hand mixer on low until combined and then on high for an additional minute to add a bit of air to the mixture.

For the Cake

2. Pour the batter into a piping bag with a wide round and smooth tip or large resealable bag and cut a corner off. Pipe batter into small circles onto cookie sheets about 1-inch apart to allow for spreading. Continue to do this in batches until the batter is used.

For the Cake

3. Bake 10 to 12 minutes until set being careful to not over bake. Let the cakes cool 2 minutes; remove from cookie sheets and place on cooling rack. Cool them completely before filling.

For the Cake

1. In a large bowl beat the butter with a hand mixer until creamy. Then gradually add the powdered sugar to blend. Once smooth and creamy add in the vanilla and salt and continue to beat until blended.

For the Filling

2. In a separate medium bowl add the marshmallow fluff and green food colouring.  Mix until blended.

For the Filling

3. Fold the green marshmallow fluff into the butter mixture and blend until combined.

For the Filling

4. Scoop the marshmallow filling into a large piping bag and cut the end off as you did before for the cake mix whoopie pies.  Pipe the filling over half of the whoopie pie tops/bottoms. Make sure to leave a little space along the edge so the icing doesn't spill out when you place the top on.

For the Filling

5. Once half of the whoopie pies have been frosted top each frosted cookie with a top.  Place them in a cool place or the fridge making sure they are not stacked for about 5 minutes to firm up a bit.

For the Filling

6. Once firm enough to handle roll the edge of the whoopie pies gently in green sprinkles and then add googly eyes as you wish.

For the Filling

Visit The Delicious Spoon for more notes and tips for making the BEST Chocolate Whoopie Pie Monsters!



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