Ingredients

  • 1 red bell pepper
  • 1 yellow bell pepper
  • 1 sweet onion
  • 1/4 cup white wine vinegar
  • 2 tablespoons olive oil
  • 1 garlic clove, minced
  • 1/4 cup chopped fresh basil
  • 1/4 teaspoon salt
  • 1/4 teaspoon freshly ground pepper
  • 8 portobello mushroom caps
  • 4 (1-ounce) slices part-skim mozzarella cheese

Method

  • Cut each bell pepper into 8 strips; cut onion into 8 slices.
  • Combine vinegar and next 5 ingredients in a shallow dish or large zip-top plastic bag; add bell pepper and onion. Cover or seal, and chill 30 minutes. Add mushroom caps; cover or seal, and chill, turning occasionally, 30 more minutes.
  • Remove vegetables from marinade, reserving marinade; set mushroom caps aside.
  • Grill remaining vegetables, covered with grill lid, over medium-high heat (350° to 400°) 10 minutes or until partially charred.
  • Place 4 mushroom caps upside down, and top evenly with grilled vegetables and cheese slices; place remaining mushroom caps, right side up, over cheese.
  • Grill, covered with grill lid, over medium-high heat (350° to 400°) until cheese melts, turning once. Serve with reserved marinade.