Banana Oat Baked Donuts

1 Preheat your oven to 350 degrees F. and lightly grease a donut pan.
2 In a medium bowl, mash the banana until smooth then whisk in the egg, milk, vanilla extract, melted butter (or coconut oil), and maple syrup until well combined.
3 To the same bowl add flour, oats, baking powder, baking soda, cinnamon, and salt. Mix until just combined. Be careful not to overmix the batter should be thick but pourable. If you are adding toppings, fold them in at this step.
4 Pipe the batter into the prepared donut pan using a ziploc bag or piping bag, filling each mold about 2/3 full.
5 Bake for 12-15 minutes, or until the donuts are golden and a toothpick inserted into the center comes out clean.
6 Let the donuts cool in the pan for 5 minutes before transferring them to a wire rack to cool completely.
7 Store these donuts in an airtight container at room temperature for up to 2 days, or refrigerate for up to a week. They can also be frozen for up to a month.