01 -
Preheat oven to 350°F. Line a 9 x 5-inch loaf pan with parchment paper and coat with nonstick spray. Set aside.
02 -
In a large bowl, whisk together the flour, baking soda, baking powder, and salt. Set aside.
03 -
In another large bowl, mix together the mashed bananas, peanut butter, vegetable oil, eggs, and granulated sugar until well combined.
04 -
Pour the dry ingredients into the wet ingredients and stir until just combined. The batter will be lumpy, which is normal.
05 -
Gently fold in the miniature peanut butter cups or chopped peanut butter cups, distributing them evenly throughout the batter.
06 -
Spread the batter into the prepared loaf pan. Bake for 55-60 minutes or until a toothpick inserted into the center comes out clean.
07 -
Let the bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.