Swedish Meatballs

1 pouch UNCLE BEN’S® READY RICE® Original Long Grain Rice

¼ cup minced onion

2 cloves garlic, minced

1 egg

1 tablespoon parsley, minced,plus extra for garnish

½ teaspoon garlic powder

1 teaspoon ground pepper, divided

¼ teaspoon allspice

½ teaspoon nutmeg, divided

1 pound ground turkey

1 teaspoon olive oil

8 ounces mushrooms, sliced

1½ tablespoons cornstarch

2 cups unsalted chicken broth

½ tablespoon Dijon mustard

¼ cup low-fat sour cream