Preheat your oven to 350 degrees and line a baking sheet with parchment paper. Set aside.
In a large bowl, mix together your butter, peanut butter and brown sugar until creamy.
Mix in the vanilla extract.
Add your ripe bananas and mix until chunky.
In a separate bowl, whisk together the flour, baking powder, cinnamon and salt.
Mix the dry ingredients into the wet ingredients until just combined. (A little bit of flour still peaking through is OK)
Fold in the crushed pretzels and chocolate chips.
Place heaping sized tablespoons of cookie dough on to your cookie sheet and gently press down with the bottom of a glass or with the palm of your moistened hand.
Bake for 8 minutes or until the edges are golden brown.