Make It
Step 1
Preheat oven to 350° F. Grease 9 x 5-inch loaf pan.
Step 2
Mash bananas in a small bowl.
Step 3
Whisk flour, baking powder, baking soda, salt and cinnamon in a medium bowl.
Step 4
Beat sugar and butter in a large mixer bowl on high until light and fluffy. Add eggs one at a time, beating well after each addition. Add oil and mashed bananas and mix thoroughly. Add in flour mixture ½ cup at a time until fully combined.
Step 5
Microwave dulce de leche in small pitcher or liquid measuring cup until easy to pour. Pour half the batter into the prepared pan. Drizzle dulce de leche over batter. Pour remaining batter over dulce de leche and use a knife to slightly swirl top layer of batter and dulce de leche.
Step 6
Bake for 60 to 70 minutes until wooden pick inserted in center comes out clean. Cool in pan on wire rack for 10 minutes; remove to wire rack to cool completely.