Preheat the oven to 350°F. In a large bowl, whisk your dry ingredients. Add the baking powder, baking soda, sugar, one teaspoon salt, and flour and whisk. When finished whisking dry ingredients, add the vanilla extract, egg, and mix.

In a microwaveable safe bowl (or a glass measuring cup) heat the milk and unsalted butter until the butter is melted. Pour the melted butter mixture into the dry ingredients and whisk. Your donut dough should be starting to come together now. Add the maple syrup and whisk for the last time. Make sure all of the flour is incorporated (you do not want pockets of flour in your donut batter!)

Take the donut pans and spray them all with a nonstick spray. Place your donut batter into a pastry bag, and pipe into the pans. Place the donut pans into the oven and bake for 12 minutes. You will know that the donuts are down when they are golden brown on the top and spring back when you touch them. If they are not golden brown and not springing back, leave in the oven for 2 additional minutes.

Allow the donuts to cool for a few minutes in the donut pans and then transfer them to a cooling rack and allow them to cool completely and come to room temperature.

While they are cooling, make your rich maple glaze! To make your maple icing (or rich maple glaze, it is really a glaze and less of a maple icing here but you get my point), take a bowl and add the confectioners sugar, and pure maple syrup. Once you start to mix them together, it will get a bit lumpy and then begin to smooth out. Once it is smoothed out, add the corn syrup. If you find that the glaze is still a bit too thick, add the tiniest bit of milk or water to the mixture.

Dip the homemade donuts into the maple glaze (make sure they are not warm doughnuts). Now, the maple glaze may run a bit, so, you can either place them on paper towels, on a wire rack with paper towels underneath, a plate, or baking sheet (if you do use a baking sheet, you still may want to line it with paper towel). Whatever you need to do to minimize the mess. Let the maple donut glaze set for a little bit and then dig in!