Mix the peanut butter, vanilla, and powdered sugar in a bowl.
Refrigerate for about half an hour, so the peanut butter becomes less sticky.
Form the peanut butter mix into ½ inch balls.
Take one pretzel and place a peanut butter ball in the middle of the pretzel. Then place another pretzel on top and gently squeeze the pretzels together so that you get a peanut butter pretzel sandwich.
Repeat this until you run out of pretzels. You should have about 25-30 pretzel sandwiches.
Melt the chocolate in a bowl and dip your pretzels halfway into the chocolate.
Refrigerate the pretzels for about an hour and enjoy.