Step 1

In a large bowl, use an electric mixer on medium speed to cream the butter until smooth, about 1 minute. Add the flour and mix until combined, about 30 seconds. Add the cake mix and water and continue mixing until smooth, about 1 minute more. Transfer the dough to a sheet of plastic wrap and flatten into a disc. Wrap tightly, then refrigerate until slightly firmed, about 30 minutes.

Step 2

Preheat the oven to 350°F (180°C). Line 2 baking sheets with parchment paper.

Step 3

Divide the dough in half. Working with one portion at a time (wrap the other in the plastic and refrigerate until ready to use), roll out on a lightly floured surface to ½ inch thick. Cut out shapes using the cookie cutters. Use an offset spatula to gently lift the cookies and transfer to the prepared baking sheets, spacing 1 inch apart. Gather and re-roll the scraps until all of the dough is used.

Step 4

Bake the cookies until they have puffed and the edges begin to crisp, 8–10 minutes. Remove from the oven and let cool for 5 minutes, then transfer to a wire rack to cool completely, about 30 minutes.

Step 5

When ready to decorate, place the candy melts in a microwave-safe bowl and microwave in 30-second intervals, stirring between, until melted completely.

Step 6

Line a baking sheet with parchment paper.

Step 7

Dip the cookies in the candy melts, then place on the prepared baking sheet. Alternatively, transfer the candy melts to a small piping bag and cut the tip, then drizzle over the cookies. Garnish with the red, green, and white sprinkles. Let sit until the candy hardens, about 10 minutes.

Step 8

Enjoy!