Preheat oven to 450 degrees F.
Use Cuisinart food processor to shred cheese and dice toppings.
In a medium saucepan over medium heat, combine milk, cream cheese, ½ cup of the mozzarella, and the parmesan cheese. Stir frequently until all the cheese has melted. Transfer to a 9x9 inch baking dish.
Cover with half of the remaining mozzarella cheese.
Add spaghetti sauce and spread to create an even layer.
Top with remaining mozzarella cheese.
Next, add all of the diced toppings. Then, cover with a single layer of pepperoni.
Cook in preheated oven until hot and bubbly, 15-20 minutes.
Enjoy with a thinly sliced baguette that has been toasted in the oven with olive oil.
Can be prepared ahead of time and reheated in the crockpot. This is especially awesome for tailgating!