Sometimes a half dozen is just enough, and this recipe works well in my Breville Toaster oven. They come together quickly and ideal for using up overripe bananas. Perfectly domed because of the extra baking powder and higher than normal oven temperature, these muffins are moist and feature a crisp sugary crunch on top. (You can substitute thawed frozen bananas; be sure to add any juice that is released as the bananas thaw.
1 cup all-purpose flour
1 ½ teaspoons baking powder
¼ teaspoon baking soda
¼ teaspoon table salt
2-3 very ripe large bananas, peeled and mashed (1 cup)
6 tablespoons plus 1 additional tablespoon sugar, divided
1 large eggs
3 tablespoons vegetable oil
1 teaspoon vanilla extract
¼ cup chopped toasted walnuts
Be sure to use bananas that are very heavily speckled or even black; less-ripe bananas will produce dry muffins with less flavor. We like the classic pairing of banana and walnuts here, but you can substitute chopped toasted pecans or omit the nuts altogether if you prefer. (Nut-free muffins will be slightly smaller.)
1. Adjust oven rack to middle position and heat oven to 425 degrees. Grease 6-cup muffin tin. Whisk flour, baking powder, baking soda, and salt together in medium bowl.
2. Whisk bananas, 6 tablespoons sugar, egg, oil, and vanilla in large bowl until fully combined. Add flour mixture and whisk until fully combined. Stir in walnuts. Using portion scoop or large spoon, divide batter evenly among prepared muffin cups (about ½ cup batter per cup; cups will be very full). Sprinkle tops with remaining 1 tablespoons sugar.
3. Bake until tops are golden brown and toothpick inserted in center comes out clean, 14 to 18 minutes. Let muffins cool in muffin tin on wire rack for 10 minutes. Remove muffins from muffin tin and let cool for at least 5 minutes. Serve warm or at room temperature.