Adapted from Sugar Cookie Banana Bread by Kristine in Between. Here’s how I make it.
I bake it in a 9×9 pan instead of a loaf pan, use Christmas sprinkles, swap in cake batter extract, add 1/4 cup Greek yogurt, and finish with a sprinkle of white sugar on top for crunch.

Ingredients
- 1/2 cup unsalted butter, melted and slightly cooled
- 3/4 cup dark brown sugar, packed
- 1/4 cup sugar
- 1 1/2 cups mashed bananas (about 3 large or 4 small to medium)
- 1 egg
- 1/4 cup milk (any kind)
- 1/4 cup Greek yogurt
- 1 tsp vanilla extract
- 1 tsp cake batter extract
- 2 cups all-purpose flour, spooned and leveled
- 1 tsp baking powder
- 1/2 tsp sea salt
- 1/2 cup Christmas sprinkles (jimmies), plus extra for the top
- White sugar, for sprinkling on top
How to make it
- Preheat the oven to 350°F. Lightly grease or line a 9×9 pan with parchment.
- In a large microwave-safe bowl, melt the butter in 30-second increments. Let it cool slightly.
- Stir in the brown sugar and sugar until combined.
- Add the mashed bananas, egg, milk, Greek yogurt, vanilla, and cake batter extract. Mix well.
- Add the flour, baking powder, and sea salt. Stir just until combined. A few streaks of flour are fine.
- Gently fold in the Christmas sprinkles.
- Spread the batter into the prepared 9×9 pan. Top with more Christmas sprinkles and a sprinkle of white sugar for crunch.
- Bake at 350°F until a toothpick inserted in the center comes out clean. (Kristine’s loaf version is 60–65 minutes; a 9×9 bakes differently, so go by the toothpick, not a set clock.)
- Cool in the pan about 30 minutes before slicing.

Notes
- Use very ripe bananas.
- Use jimmies-style Christmas sprinkles so the colors don’t bleed as much as nonpareils.
- Don’t overmix once the flour and sprinkles go in.
- Full original (loaf pan) recipe: Kristine in Between — Sugar Cookie Banana Bread.