• 1/2 c. finely diced roasted red bell pepper
Preheat oven to 450 degrees. Let pizza dough come to room temperature.
In large saucepan over medium heat, warm oil until a few droplets of water sizzle when carefully sprinkled in the pan. Add sausage and cook until meat is browned and cooked through, about 5 minutes. Transfer meat to colander and drain off all but 1 tablespoon fat from pan.
Add sliced onion and cook, stirring often, until soft and slightly caramelized, about 10 minutes. Season with salt and pepper to taste. Remove onions from heat.
In large mixing bowl, combine ricotta, mozzarella, Parmesan, egg, oregano and red pepper flakes. Fold in cooked sausage, cooked onions and roasted red bell pepper. Season with salt and pepper to taste.