Preheat your oven to 425° Fahrenheit. Place a piece of parchment paper on a cookie sheet, large enough for an 8-inch circle on top.
Add the flour, sugar, baking powder, and salt to a large mixing bowl. Whisk to combine.
Add the chunks of cold butter.
Use a pastry cutter or fork to break down the butter into pea-sized pieces.
Add the pumpkin puree to the mixture.
Add the cinnamon.
Mix well, then add the cream and mix until just combined.
Turn out the dough on a well-floured surface. Then press down and form into an 8-inch circle. Just pat it gently until you get the shape you want.
Brush with cream.
Using a pizza cutter or knife, cut into 8 scones.
Bake at 425° for 20-25 minutes until the edges are lightly browned. Remove and allow to cool at least 20 minutes before drizzling with icing.
After they are cooled you might need to recut if they closed a little during baking. You can then serve or move to wire racks and then let them cool until you're ready to serve.