01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - Clean mushrooms and carefully remove stems. Finely chop stems and set aside.
03 - Arrange mushroom caps, hollow side up, on the prepared baking sheet. Drizzle with 1 tablespoon olive oil and season with salt and black pepper.
04 - In a medium bowl, combine cottage cheese, pesto, chopped mushroom stems, Parmesan, minced garlic, fresh basil, and red pepper flakes. Mix until well blended.
05 - Spoon the filling evenly into each mushroom cap, mounding slightly.
06 - In a small bowl, mix breadcrumbs, Parmesan, and olive oil for the topping. Sprinkle over stuffed mushrooms.
07 - Bake for 18–20 minutes, until mushrooms are tender and topping is golden.
08 - Garnish with extra fresh basil before serving. Serve warm.