Ingredients
Method
- Heat oven to 350 degrees.
- Mix cake mix, eggs, melted butter, brown sugar and vanilla together. Once well incorporated, add chocolate chips to batter.
- Drop by equal sized tablespoonfuls onto a baking sheet and place into preheated oven to bake for 10 minutes. They will seem to very soft when they come out, but after you let them sit on the baking rack for 5 minutes, they will be just right, nice and chewy.
- After cooling for 5 minutes on baking sheet, then remove them to finish cooling on cooling rack. Cookie must be completely cooled before assembling sandwich cookie.
Marshmallow Buttercream Filling
- In stand mixer, whip together, marshmallow fluff and softened butter until well incorporated and smooth,
- Add in powdered sugar and peppermint extract and beat until creamy and smooth.
Sandwich Cookie Assembly
- Carefully place a heaping tablespoon of the Marshmallow Buttercream Filling onto the bottom of a cooled, chocolate cookie. Then place another cooled chocolate cookie on top, forming a sandwich.
- Gently press the filling side of the cookies together and then roll in crushed peppermint candies.