Step 1

For cookies, preheat oven to 350 degrees and line a baking sheet with parchment or a silicone baking mat and set aside.

Step 2

Place cake mix in a bowl and add shortening and eggs.  Beat until well combined into a smooth cookie dough.  Use a cookie scoop to portion dough into round balls onto the cookie sheet (photos show a scoop that is 1 1/2 tablespoons and produces a cookie on the larger side).

Step 3

Bake for about 10-12 minutes.  All ovens cook differently so keep an eye on them.  Edges should be set and tops nice and craggly.  If your cookies are smaller than 1 1/2 tablespoons they will bake faster, more like 8-10 minutes.

Step 4

Let cool on the baking sheet for about 5 minutes and then transfer to cooling rack.  Cool completely before filling.

Step 5

Frosting

Step 6

Beat butter until soft and creamy.  Add vanilla, and then powdered sugar a little at a time, beating until incorporated.  Continue to beat for 1-2 minutes until super creamy and fluffy.  If for any reason your frosting is too thick, you can add tiny amounts of milk or cream until it reaches consistency, but it should be fine as-is!

Step 7

Scoop frosting into a zip-top bag and slice the corner off.  Turn half of your cookies over with the bottom side facing up and then pipe your frosting on.  Sandwich cookies together.