Sprinkle half of the mozzarella over the cream cheese layer. Spread the pizza sauce evenly over the cheese, then top with the remaining mozzarella, cheddar, and Parmesan.
1 cup Mozzarella cheese, 1 cup good quality jarred pizza sauce, ½ cheddar cheese, ½ cup fresh shredded Parmesan cheese
In a small sauté pan, cook sausage over medium heat until no longer pink, breaking up into small pieces. Remove sausage from pan with slotted spoon and spread over top of cheese in pie plate.
1 Hot or Mild Italian sausage
In the same pan, sauté the mushrooms and onions until just golden, adding a little oil or butter if needed. Spread them evenly over the dip.
10 fresh mushrooms, ½ small onion
Sprinkle the pepperoni, bell pepper, and black olives over the top. Add extra red pepper flakes if you like more heat.
20-30 mini pepperonis, ½ green bell pepper, 10 black olives