Preheat oven to 350º. Line a loaf pan with parchment paper and grease with cooking spray.
In a large bowl, whisk together flour, baking soda and salt.
In another large bowl, mix together melted butter, sugar, egg and egg yolk, sour cream, and vanilla. Add mashed bananas and stir until combined. Gradually add dry ingredients to wet ingredients until just combined.
Fold in chocolate chips and walnuts and transfer to prepared mini muffin/loaf pan.
Bake until a toothpick comes out clean, about 1 hour in loaf pan or 15 to 20 minutes for mini muffin. Let cool 10 minutes in pan, then turn out onto a cooling rack to cool completely.
There are 86 calories in 1 serving of Vegan Chocolate Chip Banana Bread.
Calorie split: 46% fat, 50% carbs, 4% protein.
Amount Per Serving
% Daily Values*
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.