• Preheat oven to 325 degrees F.
• In a large mixing bowl, combine flour, brown sugar, baking powder, baking soda, pumpkin pie spice, and kosher salt.
• In a separate bowl, combine the canned pumpkin, eggs, buttermilk, melted butter and water; add this to the flour mixture, stirring until just combined.  Don't over mix!
• Spray two 6-count doughnut pans with nonstick baking spray; using a small spoon, scoop the prepared dough batter (be warned - it's very thick!) into the pan, dividing the prepared batter evenly into twelfths, spreading the batter as needed with the spoon or butter knife so that it's as level on top as possible. Or, you can also place the doughnut batter into a freezer bag, cutting off the corner. Pipe the batter through the hole in the corner of the bag and into the doughnut pan!
• Place the doughnut pans side-by-side onto the center rack of the oven, uncovered, and bake for 8-10 minutes or until the doughnuts spring back immediately when lightly touched on top.
• Remove the doughnut pans to a cooling rack and let rest for 10-15 minutes. Using a butter knife, lgently loosen each doughnut from the pan.  If the doughnuts don't want to come out of the pan easily, it means they are still too warm.  Give them another 5-10 minutes, then try once again.  Once the doughnuts have cooled sufficiently, they will pop right out of the pans with the help of the butter knife.

To Make the Cinnamon Glaze

• In a mixing bowl, whisk together the powder sugar, melted butter, milk or water, and cinnamon until smooth.

To Make the Cinnamon-Sugar Topping

• In a mixing bowl, combine the sugar with the cinnamon; mix well.  In a small shallow saucepan, melt the butter over low heat; keep warm.

To Finish the Baked Doughnuts

• Using your fingertips, dip 6 of the warm doughnuts into the prepared cinnamon glaze, then place them onto a parchment-lined baking sheet or platter. Dip the remaining 6 warm doughnuts first into the melted butter, then into cinnamon-sugar mixture (recipe below), then place them beside the glazed doughnuts.  Serve at once!