What do i do with leftover cake? I make cookies!

Here’s what I used:
1/4 of a leftover cake
1/4 cup Nutella
1tbsp butter
1tsp baking powder
1tbsp orange sprinkles+1tbsp black sprinkles (it’s Halloween so why not?)

Here’s how I made them:
1-preheat oven to 350
2-mix together leftover cake and other ingredients into a firm and moldable dough, then form into as many cookie shapes as you can and place onto a parchment lined baking tray
3-bake for 10-12 (careful not to burn!)
4-after cooling down, place in freezer to firm up
5-enjoy!