Turkey Breasts with Cremini Mushrooms and Madiera

Ingredients

• 1 skinless turkey breast, cut into 4 pieces about 4 ounces each
• 2 tablespoons flour
• 1-2 tablespoons olive oil
• 1 small onion, finely chopped
• 3 1/2 cups sliced cremini mushrooms
• 4 tablespoons Madeira
• 2 teaspoons Dijon mustard
• 1 tablespoon chopped fresh oregano or 1 teaspoon dried oregano
• 2/3 cup chicken broth
• 2 tablespoons fat free sour cream or fat free plain Greek yogurt
• salt and pepper to taste