Ingredients

  • 4 heads radicchio
  • 12 garlic cloves, minced
  • 2 teaspoons crushed red pepper flakes
  • 3 tablespoons fresh thyme leaves
  • 2 cups extra-virgin olive oil
  • 1/2 cup balsamic vinegar
  • 1 pound mozzarella, cut into 16 pieces
  • Salt and freshly ground black pepper

Method

  • Cut the radicchio in quarters lengthwise, being sure to keep some of the stem attached to each quarter.
  • Trim off any dark bits of stem.
  • Submerge the radicchio quarters in ice water for 1 hour to remove some bitterness.
  • Put a plate on top of the radicchio to keep them under water.
  • In a medium bowl, combine all ingredients except the mozzarella.
  • Mix well.
  • Prepare a hot fire in your grill, or heat a cast iron grill pan over medium-high heat.
  • Drain the radicchio and place them on paper towels to absorb remaining water.
  • Open up the leaves and spoon the olive oil mixture inside.
  • Place the radicchio quarters on a baking sheet and pour the remaining marinade mixture.
  • Season generously with salt and pepper.
  • Grill the radicchio until browned on the outside but still raw in the center, 3 to 5 minutes, turning occasionally.
  • Be careful, as the oil mixture may flame up.
  • When the radicchio begins to brown, pull from the grill, open up a section of each portion and place a slice of mozzarella inside.
  • Place quarters back onto the sheet pan and place the pan directly on the grill for 5 minutes to melt the cheese.
  • Drizzle any leftover dressing over the top of the grilled radicchio and serve warm.
  • If making radicchio in advance: Before the party, have the radicchio drained and marinated in the vinaigrette in the refrigerator.