Preheat your oven to 350 degrees Fahrenheit. Line a baking sheet with parchment and set aside.
In a medium mixing bowl, whisk together flour and baking powder, and set aside.
To a large mixing bowl, add softened butter, brown sugar, and granulated sugar.
Use a hand mixer to beat the butter and sugar for 1-2 minutes.
Add the peanut butter, vanilla, and egg, and mix until just combined.
Add the dry ingredient to the wet, slowly, folding the dough together until just combined.
Use a 1 1/2 inch cookie scoop to scoop out the dough, and place on the baking sheet 2-3 inches apart.
Use a fork to add the criss cross pattern to the cookies.
Bake for 10 minutes.
Remove from the oven and break off pretzel pieces to make the reindeer antlers, add M&M noses, and candy eyes.