Cream butter and sugar for 5 mins on medium high using a paddle attachment.
Add eggs and cookie nip.
Mix until combined.
Add in flour, baking powder and salt.
Mix until fully combined
Turn dough out onto a floured surface
Roll to desired thickness and cut out shapes.
Place on parchment lined baking sheets
Bake 10-12 mins
Remove from oven and let cool on baking sheets.
Let rest for 8-10 mins before flipping the cookies over and letting them cool completely at room temperature.