Preheat oven to 450 degrees. Spray a glass pie pan with non-stick cooking spray.
In a large bowl, combine the sour cream, Italian seasoning, dried parsley and red pepper flakes
Add in all the cheeses and mix until well combined
Spread the mixture in the prepared glass pie pan
Bake for 15 minutes, then switch to broil and broil for 2-3 minutes or until nice and bubby and starting to lightly brown on the top (Keep an eye on it while broiling so you don’t burn it. I use the low broil setting on my oven.)
Serve as soon as it comes out of the oven, piping hot.
If desired, garnish with a pile of fresh tomato in the middle, (I like Campari best), and sprinkle chopped fresh parsley all over the top. (Otherwise serve tomato and parsley on the side for your guests to add.