Salisbury Steak with Mashed Cauliflower

Ingredients:
Salisbury Steak:
1 lb. lean ground beef
1/3 cup plain bread crumbs
2/3 cup onion, finely chopped, divided
1 egg white
1/4 tsp. garlic powder
salt and pepper to taste
nonstick cooking spray
1 12-oz. jar fat-free beef gravy
2 Tbsp. Worcestershire sauce
1/2 cup whole white mushrooms, diced

Ingredients:
Cauliflower Mash:
1 large Yukon Gold potato, peeled and cut into chunks
1 large head cauliflower, chopped
2 cups water
1/4 cup shredded part-skim Parmesan cheese
2 Tbsp. butter
3 garlic cloves, minced
1/4 cup lowfat sour cream

Instructions:
In a large bowl, combine beef, bread crumbs, 1/3 cup onion,
egg white, garlic powder, salt and pepper.
Firmly shape into 6 oval patties.
Spray a large skillet with cooking spray.
Over medium-high heat, cook patties for 4 minutes
on each side or until browned; set aside.
In the same skillet, add gravy, Worcestershire sauce,
mushrooms and remaining onion; heat to a boil.
Reduce heat to low.
Return patties to pan, cover and
simmer for 20 minutes, stirring occasionally.
While the patties are simmering,
in a large pot over medium-high heat,
boil potato and cauliflower in water
for 10 to 12 minutes or until tender.
Drain and place in a large bowl.
Add cheese, butter and garlic
and using a potato masher,
mash mixture to desired consistency.
Mix in sour cream and
season to taste with salt and pepper.