Sauté the onions in the olive oil, about 2 minutes Add the beef, chopping as you cook.
Add pepperoni, breaking it up as it cooks together. Add tomato paste, basil and oregano.
Cook for 15-20 minutes, stirring constantly.
The mixture should be slightly moist Add the cheese and set aside to cool. Tip: It’s easier to work with if both mixtures are cold in the process of forming rice balls.
