Preheat oven to 350F. Prepare a 5 x 9-inch loaf pan by spraying generously with non-stick cooking spray.
In a large mixing bowl, mash bananas with a fork. Add sugar, eggs, Greek yogurt, milk, melted butter, vanilla extract, and cinnamon; mix well.
Add Kodiak Cakes Power Cakes mix and baking powder to wet ingredients; stir until just combined.
Pour banana bread mixture into prepared loaf pan; use a rubber spatula to evenly distribute mixture. Bake for 40-45 minutes, until an inserted toothpick comes out clean.
*If you don't have overripe bananas, check out how to ripen bananas in the oven or air fryer above.
NUTRITION FACTS
per 1-inch slice: 305 calories, 10g fat, 43g carbohydrates, 12g protein