Heat over to 350°F and grease 9x5-inch loaf pan. In a medium-large bowl, stir masher bananas togther with egg, sour cream, espresso, and vanilla extract until everything is well combined. Stir in the instant espresso granules

Stir in melted oil/butter until completely mixed in. Follow by stirring in sugar and mix well.

In a small bowl stir together flour, baking soda, and salt. Dump the mixture into the wet ingredients and stir just until there are no dry streaks left. The batter will still be lumpy. Scrape the batter into the prepared loaf pan and bake in the oven until tester inserted into the loaf comesout clean..about one hour.

Remove from oven, allow to cool in loaf pan for 10 to 15 minutes then gently run knife around the edge of the bread and turn it out of the pan. Finish cooling on a cooling rack.