To make the dough, add the yeast, sugar and a tablespoon of flour to the warm water, give it a stir, and set aside in a warm place for 10-15 minutes until frothy.
In a large bowl, sift in the flour, add oil, the salt, garlic granules and a teaspoon of oregano, then pour in the yeast mixture.
Knead well into a dough that is elastic and no longer sticks to the hands - add more flour if necessary.
Cover the bowl with clingfilm, and leave to prove in a warm place for 2 hours, or until the dough has doubled its size.
Cut the dough into 2 balls, roll the first ball, then use a large cookie cutter or a glass to cut out 12 circles.
Grease and butter each hole of the muffin tray, arrange a dough slice, then top with a teaspoon of sauce, a slice of pepperoni, and a cube of cheese.
Sprinkle some oregano over, then bake in the preheated oven at 200 degrees Celsius (350 Fahrenheit) for 10-12 minutes until the base is golden and the cheese is melted.
Repeat the process with the remaining dough.