01 - Preheat oven to 375°F.
02 - In a skillet over medium heat, add olive oil. Sauté shallot and garlic for 1–2 minutes, until fragrant.
03 - Add chopped mushrooms and cook for 6–7 minutes, stirring occasionally, until the mushrooms release their liquid and it evaporates. Season with salt, pepper, and thyme. Remove from heat and let cool slightly.
04 - In a large bowl, combine cream cheese, sour cream, mozzarella, Parmesan, and half of the parsley. Mix until smooth.
05 - Fold in the sautéed mushroom mixture until well combined.
06 - Spread the mixture into a greased baking dish or ovenproof skillet.
07 - Bake for 20–25 minutes, until golden and bubbly.
08 - Remove from oven, sprinkle with remaining parsley and optional red pepper flakes. Serve warm with toasted baguette slices, crackers, or fresh veggies.