Grind pumpkin and carrots with a blender, but not in mashed potatoes, you can also grate on a fine grater.
Beat soft butter with sugar until smooth, then beat eggs one at a time, beat well after each egg. Add sour cream at the end.
Add sifted flour with baking powder to the mass and mix.
Add pumpkin with carrots to the dough and mix. Grease the baking dish with vegetable oil and transfer the dough. Bake at 180 degrees for about 1 hour.
Cool the finished cake a little, remove from the mold, sprinkle with powdered sugar and serve. Bon Appetit!!!