Lightly grease bread pan with vegetable shortening or butter. Sprinkle in flour and shake around to evenly cover bread pan. Tap out excess flour. Set aside.
In a large mixing bowl using an electric mixer, mix butter, eggs, sugar, peanut butter, and bananas until blended.
Add flour, ½ teaspoon cinnamon, baking soda, salt, and baking powder; mix until blended. Fold in Reese's Peanut Butter Cup Minis.
In a small bowl, mix together 2 tablespoons of granulated sugar and 1 teaspoon of cinnamon. Set aside.
Pour batter into bread pan. Sprinkle cinnamon-sugar mixture on top.
Bake for 60-70 minutes, or until toothpick comes out clean.
Allow bread to cool in pan for about 30 minutes, then transfer to a wire rack to cool completely. Eat & Enjoy!
Notes
Reese's Peanut Butter Banana Bread should be stored in an airtight container; will keep 5+ days.