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Stuffed Portobello Mushrooms with Olives and Caramelized Onions

Photo: Karry Hosford
Yield 4 servings (serving size: 1 stuffed mushroom)

Ingredients

  • 4 (4-inch) portobello mushroom caps
  • Cooking spray
  • 2 teaspoons olive oil
  • 4 cups finely chopped Vidalia or other sweet onion
  • 1/2 cup dry red wine
  • 1 tablespoon balsamic vinegar
  • 2 teaspoons finely chopped fresh thyme, divided
  • 1/2 teaspoon sea salt
  • 3/4 cup chopped pitted kalamata olives
  • 1 teaspoon grated lemon rind
  • 1/4 teaspoon black pepper
  • 3 (1-ounce) slices white bread
  • 1/3 cup (about 1 1/2 ounces) grated fresh Parmesan cheese
  • 1/4 cup finely chopped fresh flat-leaf parsley

Nutrition Information

  • calories 246
  • caloriesfromfat 30 %
  • fat 8.1 g
  • satfat 2.2 g
  • monofat 4.2 g
  • polyfat 0.8 g
  • protein 7.6 g
  • carbohydrate 27.6 g
  • fiber 4.4 g
  • cholesterol 7 mg
  • iron 1.3 mg
  • sodium 700 mg
  • calcium 134 mg

How to Make It

  1. Preheat oven to 350°.

  2. Remove stem and brown gills from undersides of mushrooms using a spoon; discard gills. Place mushrooms, stem side down, on a baking sheet coated with cooking spray. Bake at 350° for 10 minutes; cool mushrooms on wire rack.

  3. Heat oil in a large nonstick skillet over medium-high heat. Add onion; sauté 12 minutes. Stir in wine, vinegar, 1 teaspoon thyme, and salt; bring to a boil. Cover, reduce heat, and simmer 25 minutes. Uncover and increase heat to medium-high; cook 5 minutes or until liquid evaporates. Stir in olives, rind, and pepper.

  4. Place bread in a food processor; pulse 10 times or until coarse crumbs measure 1 1/2 cups. Combine 1 teaspoon thyme, crumbs, cheese, and parsley. Spoon 1/2 cup olive mixture into each mushroom; top with about 3/4 cup cheese mixture. Bake at 350° for 25 minutes or until golden brown.