Preheat oven to 375 degrees and coat a medium-sized baking dish with nonstick spray.
In a large bowl, combine banana, egg, peanut butter, almond extract, syrup, honey, milk, and coconut oil. Mix well. Add remaining ingredients and mix thoroughly. Pour into prepared dish. If desired, additional sliced banana, walnuts, or toasted coconut can be placed on top of the batter.
Bake 25 to 30 minutes, until light brown and slightly firm. Allow to cool for 5 minutes before slicing and serving.