In a large bowl, sift together the flour, baking powder, sugar, and spices. Mix to fully incorporate. Set aside.
In a separate bowl, mix the pumpkin puree and heavy cream pure the melted butter and mix until smooth.
Pour the pumpkin mixture into the flour mixture and use a wooden spoon to blend it all just until a dough is formed.
Divide dough into two even parts and shape each part into a 6" round disk. Place the disks on a baking sheet lined with parchment paper and let cool while the oven is heated.
Heat oven to 400F. Once ready, remove the dough from the refrigerator and use a large knife to slice each disk into 6 even part.
Bake for 15-17 minutes, until the bottom, is golden brown and the top puffy.
Remove from oven allow 5-7 minutes to set then top with frosting and sprinkle with pecans.
Place sugar in a large bowl and mix in the cinnamon.
Add 4 TBS of heavy cream and mix into a thick paste. If needed add 1 TBS of heavy cream at a time until the desired consistency is formed.