01 -
Preheat oven to 350°F. Grease a 9x5-inch loaf pan or line with parchment paper.
02 -
In a small bowl, blend together 1/3 cup sugar and 1 tablespoon ground cinnamon. Set aside.
03 -
In a large bowl, mash bananas until smooth. Stir in melted butter until fully incorporated.
04 -
Add baking soda and a pinch of salt to the banana mixture. Mix in 3/4 cup sugar, beaten egg, and vanilla extract. Gradually fold in flour, mixing only until just combined.
05 -
Pour half the batter into the prepared loaf pan. Sprinkle half of the cinnamon sugar mixture over the batter. Add remaining batter, then top with the rest of the cinnamon sugar. Swirl with a knife or skewer for a marbled effect.
06 -
Transfer the loaf pan to the oven and bake for 50 to 60 minutes, or until a toothpick inserted in the center emerges clean.
07 -
Allow bread to cool in the pan before slicing. Serve for breakfast, brunch, or as a snack.