Sift the dry ingredients together into a bowl and cut in shortening.
Mash the cranberry sauce in a bowl.
Add the egg and sour cream and mix well.
Add to flour mixture and mix well.
Roll out on floured board to a rectangle and cut in small squares.
Sprinkle with cheese.
Place on a baking sheet.
Bake at 400 degrees for 15 to 20 minutes.