These stuffed mushrooms with sour cream are a delicious appetizer that will impress your guests. The mushrooms are filled with a creamy mixture of sour cream, breadcrumbs, and herbs, then baked until golden and bubbly. The sour cream adds a tangy flavor and creamy texture to the mushrooms, while the breadcrumbs provide a satisfying crunch. Serve these stuffed mushrooms as a tasty and elegant appetizer at your next gathering.