Place the flour into a microwave-safe bowl, and heat in the microwave for 40 seconds. In a large bowl, mix the butter with sugar until fluffy.
Add in the vanilla extract, and mix until smooth. Add in the flour and mix until a thick dough forms. Fold in the crushed Oreo cookies. Place cookie dough evenly onto pretzels. Sandwich with more pretzels.
Place the chocolate chips into a microwave-safe bowl, and heat in the microwave in 30-second intervals, stirring well until it is fully melted and smooth. Dip each pretzel bite into the melted chocolate and set back onto plates. Let sit until the chocolate has completely set.
