Grease a scone tray or baking tray, and preheat oven to 425 F.
Cream together the butter and sugar until light and fluffy. Add egg and beat well. Add pumpkin, flour, and salt and fold in by hand.
Knead lightly and cut into 1 inch triangles. Place close together on the scone tray and bake until well risen and golden on top, about 15 minutes. Serve hot, with butter; or drizzle with a simple icing.