Spicy Italian Stuffed Mushrooms

Add pepperoncini for extra heat in this mushroom filling made with spicy Italian sausage.
  • Level: Easy
  • Total: 1 hr
  • Active: 30 min
  • Yield: 24 mushrooms
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Ingredients

Mushrooms:

24 large white or cremini mushrooms, wiped clean, stems finely chopped for the filling

2 tablespoons extra-virgin olive oil

Kosher salt

Filling:

1/4 cup extra-virgin olive oil

1/2 cup finely chopped celery

1/2 cup finely chopped onion

Kosher salt and freshly ground black pepper

1/2 cup grated mozzarella

1/2 cup cooked, crumbled spicy Italian sausage

2 tablespoons finely chopped fresh basil, plus more for garnish (optional)

2 tablespoons finely chopped pepperoncini

1 cup coarse fresh white breadcrumbs

Directions

  1. Preheat the oven to 425 degrees F.
  2. For the mushrooms: If your mushrooms caps are very rounded, trim a very thin slice from the top of the caps to help them sit upright for baking. Toss the mushroom caps with the olive oil and 1/4 teaspoon salt in a large bowl.
  3. For the filling: Heat the oil over medium-high heat. Add the chopped mushroom stems, celery and onion and cook, stirring occasionally, until just soft, 6 to 8 minutes. Scrape into another large bowl, season with 3/4 teaspoon salt and a few grinds of pepper and set aside to cool.
  4. Add the mozzarella, sausage, basil and pepperoncini to the cooled mushroom stem mixture. Stir in the breadcrumbs until well moistened.
  5. Pack each mushroom with an equal amount of filling and transfer the filled mushrooms to a rimmed baking sheet. Bake until the mushrooms are tender and the filling is brown and crispy on top, about 15 minutes. Let cool 5 minutes before removing from the baking sheet. Sprinkle with basil leaves if using. 
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