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Roasted Red Onions Stuffed With Thyme Mascarpone Mousse

  • Yield: 6 servings


  • 6 medium red onions (each about 1/2-pound)
  • 2 tablespoons plus 1 1/2 teaspoons olive oil
  • 1 teaspoon salt
  • 1/2 teaspoon freshly ground black pepper
  • 1/2 pound mascarpone cheese, at room temperature
  • 2 teaspoons chopped fresh thyme
  • 1 teaspoon minced garlic
  • 1 teaspoon minced shallots
  • 6 sprigs fresh thyme


  • Preheat the oven to 400° F. Line a baking sheet with aluminum foil and set aside.
  • Peel the onions. Trim the stem ends so they will stand upright, and remove 1/2-inch off the top. Rub 1/4 teaspoon of the oil on each onion and season with 1/8 teaspoon of the salt and a pinch of the pepper. Place on the baking sheet and roast until tender and caramelized around the edges, about 45 minutes. Remove from the oven and cool.
  • When cool enough to handle, push out the centers, leaving a shell. Cut pieces of the removed onions to fit inside each shell to prevent the stuffing from oozing out. Reserve the remaining inner pieces.
  • In a bowl, combine the mascarpone, thyme, garlic, shallots, remaining 1/2 teaspoon salt, and 1/4 teaspoon pepper, and mix until blended. Stuff each onion with the cheese mixture and return to the baking sheet. Bake until warmed through and the cheese melts completely, 5 to 6 minutes.
  • Remove from the oven and transfer to serving plates. Place 1 thyme sprig in the center of each onion, and serve immediately with a spoonful of the reserved onion pieces.