Skinny Cheese and Bacon Stuffed Mushrooms

Heat oven to 350°F. Remove stems from mushrooms; reserve caps. Chop enough stems to measure 3/4 cup. Discard remaining stems or reserve for another use. In large bowl, toss mushroom caps with vinaigrette; place stem sides down in ungreased 15x10x1-inch pan.

Bake 10 minutes. Let stand until cool enough to handle; drain.

Meanwhile, in 10-inch nonstick skillet, cook bacon until crisp; drain on paper towel. Crumble bacon; set aside. Remove and discard drippings from skillet.

In same skillet, heat 1 teaspoon of the olive oil over medium heat. Add onion and chopped mushroom stems; cook 4 to 6 minutes, stirring occasionally, until onion is tender.

In medium bowl, stir onion mixture, bacon, cheeses and mustard until well blended. Spoon mixture into mushroom caps; place filled sides up in pan. In small bowl, mix bread crumbs and remaining 1/2 teaspoon olive oil; stir in parsley. Sprinkle bread crumb mixture over filled mushroom caps.

Bake 10 to 15 minutes or until thoroughly heated and cheese is melted. Serve warm.