Step 1

Preheat the oven to 375 degrees. Spray a donut pan with a nonstick baking spray, like Baker's Joy.

Step 2

Stir together the flour, baking powder, baking soda, cinnamon, and nutmeg. Set aside.

Step 3

Cream the butter, salt and sugar until smooth. Add egg, sour cream, and banana and beat again.

Step 4

Slowly add the flour mixture and stir until just moistened.

Step 5

Spoon the batter into a large Ziplock bag and cut one corner off. Fill the cavities halfway and bake for 12 minutes. The tops should spring back when finished and be nice and golden brown.

Step 6

Let the donuts cool in the pan for 2 minutes before removing to a wire rack to cool completely.

Step 7

Combine the chocolate chips and shortening in a microwave safe bowl. Heat for 30 seconds. Stir and repeat until melted and smooth.

Step 8

Dip the tops of the donuts and add sprinkles or mini chocolate chips.. Let set. Store in a sealed container on the counter.