| 2 eggs large | Whisk together eggs, bananas, butter, brown sugar and vanilla until smooth | Stir in sour cream | Mix dry and wet ingredients until flour is fully incorporated | Transfer batter to prepared pan and bake 55 to 65 minutes until toothpick comes out clean | Cool, remove from pan, and finish cooling on rack |
| 1 3/4 cup bananas or 4 ripe bananas medium, mashed |
| 1/2 cup salted butter or 115 gram, or 1 stick melted and slightly cooled |
| 3/4 cup light brown sugar or 165 gram packed |
| 1 teaspoon vanilla extract |
| 1/4 cup sour cream or 57 gram |
| 2 cup all-purpose flour or 256 gram | Whisk together flour, baking soda, salt and cinnamon |
| 1 teaspoon baking soda |
| 1/2 teaspoon kosher salt such as Diamond Kosher |
| 1/2 teaspoon ground cinnamon |
| throughout: Nonstick spray for greasing |