Healthier Salisbury Steak

Ingredients

• 2 teaspoons oil
• 1 cup chopped onion
• 8 ounces sliced mushrooms
• 1 teaspoon minced garlic
• 2 pounds ground turkey, 93% lean
• 1/2 cup steel cut oats, quick
• 3 egg whites
• 2 cups beef broth
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 2 tablespoons flaxseed meal
• 2 tablespoons grated Parmesan
• 2 tablespoons whole wheat flour
• 3 tablespoons marinara sauce, bolognese sauce or tomato paste
• 1 teaspoon red wine vinegar
• 2 teaspoons Worcestershire sauce
• 1 teaspoon ground mustard
• 1 teaspoon garlic powder
• 1/4 cup water
• fresh chopped parsley