1 tablespoon flavorless vegetable oil, such as canola or safflower
¼ cup firmly packed light brown sugar
¼ cup all-purpose flour
¼ teaspoon baking powder
¼ teaspoon vanilla extract
Pinch salt
1 tablespoon finely chopped walnuts or pecans (optional)
Instructions
Mash the banana with a fork in a small bowl. Mash in egg (use a whisking motion with your fork) and oil. Stir in brown sugar, flour, baking powder, vanilla and salt and optional nuts just until blended. Scrape into 12-ounce microwave safe mug and cook at high power for 2 minutes. Check mug cake by testing with a bamboo skewer, which should come out with just a few crumbs clinging. Cook in 10-second bursts if it needs further baking but it shouldn’t be more than 2 ½ minutes total. Eat immediately! Top with optional Cream Cheese Frosting (see Tips), if you like.
Recipe by Bakepedia at https://www.bakepedia.com/banana-bread-mug-cake/