Preheat oven to 350 degrees F. and line 1 large loaf/bread pan or 2 small loaf/bread pans with parchment paper.
Cream butter and sugar until well combined. Stir in bananas, eggs and vanilla mixing to combine. Stir in flour, baking soda, salt, chocolate chips and pistachios. Stir until combined and transfer to loaf/bread pans.
Bake for 50-55 minutes or until baked through. Let cool completely then cut into slices.