Cream together peanut butter, butter, sugar and brown sugar until smooth.
Add egg and vanilla and beat until smooth.
Whisk together flour, baking soda and salt in a separate bowl.
Slowly add dry ingredients to the creamed mixture, beating until incorporated.
Roll into ½-3/4" balls and place on cookie sheet several inches apart.
Sprinkle with sugar and gently make an indentation slightly off the center of each cookie.
Bake 12-14 minutes.
Place an M&M in the indentation of each cookie.
Insert 2 mini chocolate chips (pointy side down) above the M&M to be the eyes.
Insert 2 pretzel pieces to be the antlers.
If the antlers won't stick, place some chocolate chips in a sandwich bag and microwave 30 seconds and knead until soft. Clip the very tip of the corner and pipe onto cookie to act as glue.
Recipe by OurKidsMom at https://www.ourkidsmom.com/rudolph-peanut-butter-cookies/