Preheat the oven to 375 degrees F.
In a large bowl, sift the flour, baking powder and salt twice. Note: If you do decide to use the cinnamon, sift it with the other ingredients here.
In another bowl, cream the butter and shortening.
Add it to the flour. Add the milk, in thirds. Fold into the flour and make a smooth soft dough.
Flatten the dough (1 cm thick) with a rolling pin. Sprinkle cheese over the flattened dough.
Roll.... Cut into 1-inch thick rounds. Place on a greased baking sheet, and bake for about 30 minutes at 350 degrees F, or until golden brown.