In a medium bowl, combine the sour cream, Italian seasoning, garlic powder, red pepper flakes, 4 cups of shredded cheese and the parmesan/romano cheese blend. Mix well.
Transfer the cheese mixture to a 10″ round skillet or 11×7″ baking dish.
Top with the pizza sauce. Then sprinkle with remaining shredded cheese. Place pepperoni slices on top.
Bake for 14 minutes, or until the cheese is lightly bubbly around the edges.
Then set the broiler to high and broil for 2 minutes. Watch it closely and remove if it starts to get too brown on top.
Serve while warm with sliced Italian bread.
For the smoothest texture, buy blocks of parmesan and romano and use a microplane cheese grater to grate the cheese very finely. This will help it melt in smoothly.Refer to the article above for more tips and tricks.The calories shown are based on the recipe serving 8, with 1 serving being ⅛ of the cheese dip. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information. The information in the nutrition box are calculated through a program and there is room for error. If you need an accurate count, I recommend running the ingredients through your favorite nutrition calculator.**