Step 1

to 350°F (175°C). Grease a baking dish with butter or cooking spray.

Step 2

In a mixing bowl, combine softened cream cheese, sour cream, mayonnaise, Parmesan cheese, and mozzarella cheese. Mix until smooth and well combined.

Step 3

chopped mushrooms, minced garlic, chopped parsley, salt, and pepper.

Step 4

the mixture to the prepared baking dish, spreading it evenly.

Step 5

If desired, sprinkle breadcrumbs evenly over the top of the dip.

Step 6

in the preheated oven for 25-30 minutes, or until the dip is bubbly and the top is lightly golden.

Step 7

from the oven and garnish with chopped parsley.

Step 8

with bread slices, crackers, or vegetable sticks.