01 -
Preheat oven to 350°F (175°C). Grease and flour a 9x5-inch loaf pan or line it with parchment paper.
02 -
In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
03 -
In a large bowl, cream the softened butter and brown sugar together with a hand mixer or stand mixer until light and fluffy.
04 -
Add eggs one at a time, mixing well after each. Blend in Greek yogurt and vanilla extract until smooth.
05 -
Stir mashed bananas into the wet mixture, mixing until smooth and fully incorporated.
06 -
Gradually fold the dry ingredients into the banana mixture until just combined, taking care not to overmix.
07 -
In a small bowl, stir together the granulated sugar and ground cinnamon.
08 -
Spread half of the batter in the loaf pan. Evenly sprinkle half of the cinnamon-sugar over the batter.
09 -
Spoon the remaining batter on top and spread evenly. Sprinkle the remaining cinnamon-sugar mixture over the surface.
10 -
Use a butter knife to gently swirl the cinnamon mixture into the batter, forming a marbled pattern.
11 -
Bake in the preheated oven for 60 to 65 minutes or until a toothpick inserted in the center comes out clean.
12 -
Allow bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely before slicing.