Peanut butter banana bread sliced

Peanut Butter Banana Bread

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Super moist and marbled with peanut butter, this peanut butter banana bread is a easy recipe that makes for a great mid-morning treat.

I am a huge fan of peanut butter. Even since I was a kid, one of my favorite snacks has been grabbing a spoon and getting a heaping scoop of peanut butter. If I can add peanut butter to it, I will, so obviously I had to make some peanut butter banana bread.

Tips For Making Peanut Butter Banana Bread

  • The secret to getting banana bread super moist is using melted butter and sour cream. The melted butter coats the flour and the sour cream adds fat and acidity, giving the bread a soft and rich texture.
  • Make sure you have super ripe bananas. If the stem is still yellow, they aren’t ripe enough yet. To ripen them quicker, you can put the bananas in a brown bag overnight. This blocks out just enough oxygen for the bananas to release a chemical called ethylene, which speeds up the ripening process. If you want quicker results, try using the microwave. Poke the unpeeled bananas all over with a fork, and then microwave for 30-seconds at a time until they are soft. They won’t be as sweet, but they still work.
  • Drop and swirl the peanut butter as soon as you’re done mixing in the powdered sugar. It is easier to swirl in if it is still slightly warm.

Peanut Butter Banana Bread


11/2 cup banana, mashed (about 3-4 bananas)
1/2 cup brown sugar
1/2 cup granulated sugar
1/2 cup butter, melted
2 eggs
1 tsp vanilla extract
1/2 cup sour cream
1 1/3 cup flour
1 tsp baking soda
1/2 tsp salt
1 cup peanut butter
1/4 cup powdered sugar


  1. Preheat oven to 350 degrees. Grease a 9×5 bread pan or line it with parchment paper.
  2. In a bowl, mix together flour, salt, and baking soda.
  3. In a separate bowl or stand mixer, cream together the melted butter and sugars. Add in the mashed banana, eggs, vanilla extract, and sour cream.
  4. Once all of the wet ingredients are mix together, add in the dry ingredients and mix until combined.
  5. Pour the batter into your prepared bread pan.
  6. For the peanut butter swirl, place peanut butter in a heatproof bowl and microwave for 30 seconds. Mix in powdered sugar until smooth.
  7. Drop spoonfuls of peanut butter onto the batter, and swirl in using a butter knife.
  8. Bake for 1 hour to an hour and 15 minutes, or until an inserted toothpick comes out clean except for a few crumbs. Let cool completely before removing it from the pan.

Looking for more bread?

Chocolate Banana Bread
Blueberry + Cardamom Olive Oil Loaf
Zucchini Bread

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