Preheat oven to 375F. Spray a 9-inch pie dish (or 1o-inch, or similar-sized oven-safe baking dish) with cooking spray; set aside.
In a large bowl, add the cream cheese, mayo, and stir to combine. The softer the cream cheese is, the easier this is.
Add 1 cup cheese (reserving remainder to be sprinkled on top), and all the remaining ingredients. Stir to combine.
Turn mixture out into prepared dish, smoothing the top lightly with a spatula.
Evenly sprinkle reserved 2 cups cheese over the top.
Bake for about 40 minutes, or until top is golden browned, bubbly, and dip is done to your liking. Allow dip to cool momentarily before serving.
