Preheat your oven to 350°F (175°C) and grease a loaf pan.

Mash the ripe bananas in a mixing bowl until smooth.

In the mashed bananas, stir in peanut butter, sugar, and eggs until mixed well.

In a separate bowl, whisk together flour and baking soda.

Gradually add the dry mixture to the wet mixture, folding gently.

Fold in the Reese's Pieces evenly into the batter.

Transfer the batter into the greased loaf pan and smooth the top.

Bake for approximately 60 minutes, checking for doneness with a toothpick.

Cool the bread in the pan for 10 minutes, then transfer to a wire rack.

For the optional glaze, mix powdered sugar, milk, and peanut butter, then drizzle over the bread after cooling.