Preheat the oven to 350 degrees F. Before beginning, place the bowl of your stand mixer in the freezer in preparation for making your icing.
In a medium bowl, whisk together the 1 ½ cups all purpose flour, 1 ½ tsp baking powder, 1 tsp baking soda, 2 tsp cinnamon, and s1 tsp salt. Set aside.
1 ½ cups all purpose flour, 1 ½ tsp baking powder, 1 tsp baking soda, 2 tsp cinnamon, 1 tsp salt
In a large bowl, whisk together the 1 cup brown sugar, 3 eggs, ¾ cup olive oil, 1 ¼ cup pumpkin puree, and 1 tsp vanilla extract until smooth and combined.
¾ cup olive oil, 3 eggs, 1 cup brown sugar, 1 ¼ cup pumpkin puree, 1 tsp vanilla extract
Fold the dry ingredients into the wet ingredients with a spatula until smooth and combined.
Pour the batter into a plastic piping bag and cut a 1 inch opening in the corner. Squeeze the batter into a silicone donut pan until filled to the top.
Bake for 20 minutes until the donuts are cooked through and a toothpick comes out clean.
As the donut are cooling in the pan, start the icing by melting the ⅓ cup salted butter in a saucepan on medium heat. Cook for 3-5 minutes, stirring constantly until it becomes copper in color and smells of caramel.
⅓ cup salted butter
Pour the browned butter into the chilled bowl fitted to the stand mixer.
With the whisk attachment, beat the butter on high speed for about 5 minutes until cooled. Add the ⅓ cup cream cheese and beat on medium-high speed for an addition 3 minutes until smooth and combined.
⅓ cup cream cheese
Add the 1 cup powdered sugar, 1 tsp vanilla extract, ½ tsp cinnamon, and ¼ cup heavy cream. Beat for another 2 minutes until combined and at a soft and smooth consistency.
1 cup powdered sugar, ¼ cup heavy cream, 1 tsp vanilla extract, ½ tsp cinnamon
Once the donuts are cooled, dip on side of them in the icing and chill in the fridge for at least 30 minutes before serving.