They are best eaten the same day but will keep at room temperature for 1-2 days.
Yes, They can be frozen for up to 2 months. If freezing do not apply either the cinnamon sugar or the chocolate glaze. Thaw and then glaze when ready to eat.
A cake doughnut, such as these, is made with sweetened dough that uses baking powder and/or baking soda as a leavening agent. A fried doughnut is usually a yeast doughnut that uses yeast as the leavening agent.
I don't think doughnuts can be considered healthy but cake doughnuts are lower in fat, calories and sugar than a fried one. And this one has all the benefits of bananas on its side.
HEALTHY BAKED BANANA DOUGHNUTS https://2cookinmamas.com/healthier-banana-doughnuts/