Spray a medium nonstick skillet with nonstick spray coating. Add the mushrooms to the skillet and brush with the oil, using a brush or your finger. Sprinkle with salt (if desired) and pepper.

Cook over medium to medium-high heat 6 to 7 minutes or until the mushrooms have exuded their juices, softened and begun to brown.

Remove the pan from the heat. Stir in the vinegar and cheese and toss to coat the mushrooms. Serve at once.

This recipe yields 1 serving.

Exchanges Per Serving: 1 Vegetable, 1 Monounsaturated Fat.

Nutrition Facts: Calories 72; Total Fat 6 g; Cholesterol 3 mg; Sodium 46 mg; Carbohydrate 4 g; Dietary Fiber 1g; Sugars 2g; Protein 3 g.