Make this creamy, cheesy Stuffed Mushroom Dip for your next gathering. It captures the savory flavor of classic stuffed mushrooms in an easy, warm, and scoopable appetizer format.
Preheat your oven to 375 degrees Fahrenheit. Lightly grease an 8×8 inch baking dish.
Heat olive oil in a large skillet over medium heat. Add the chopped mushrooms and onion. Cook, stirring occasionally, until the mushrooms release their liquid and the mixture is browned, about 8 to 10 minutes.
Add the minced garlic to the skillet and cook for 1 minute until fragrant. Remove the skillet from the heat and let the mixture cool slightly.
In a medium bowl, combine the softened cream cheese, mozzarella cheese, Parmesan cheese, sour cream (or Greek yogurt), Italian seasoning, salt, and pepper. Mix until just combined.
Fold the cooled mushroom and onion mixture into the cheese mixture until evenly distributed.
Spread the dip mixture into the prepared baking dish. If using, sprinkle the panko breadcrumbs evenly over the top.
Bake for 20 to 25 minutes, or until the dip is hot throughout and the top is lightly golden brown.
Let the dip rest for 5 minutes before serving warm with crackers, toasted baguette slices, or fresh vegetables.
Notes
For a make-ahead option, prepare the dip mixture completely, cover it, and refrigerate for up to 2 days. Add 5 to 10 minutes to the baking time if baking directly from the refrigerator.
If you want a richer flavor, substitute 4 ounces of cooked, crumbled Italian sausage for 4 ounces of the mushrooms.
Serve this hot dip immediately for the best texture.