Chopped fresh parsley or thyme, optional for serving
1 cup plain whole milk Greek yogurt, do not use nonfat or it will curdle
12 oz. whole wheat wide egg noodles
2 tbsp. all-purpose flour
16 oz. sliced baby Bella cremini mushrooms
3 cups reduced sodium beef broth, divided
1 tbsp. Dijon mustard
3 tbsp. Worcestershire sauce
1/2 tsp. onion powder
1 tsp. garlic powder
1 tsp. dried dillweed
1 tsp. ground black pepper
1 1/2 pounds boneless sirloin steak, cut into 1 1/2-inch cubes
1 1/2 tsp. kosher salt, divided
1 small yellow or white onion, diced
1 tbsp. unsalted butter
1 tbsp. extra virgin olive oil