Sirloin Steaks with Creamy Onion Sauce

INGREDIENTS

2 lb

( 1-inch thick) choice beef sirloin, thick steaks

1/2 cup

(1 small) thinly sliced yellow onion, small

Parsley, fresh

1 1/2 tsp

Worcestershire sauce

1/2 tsp

Black pepper, cracked

Black pepper, Freshly cracked

1 tsp

Kosher salt

Kosher salt and pepper

7 1/2 tsp

Butter, unsalted

1/4 cup

Cow's milk feta cheese

1/2 cup

Heavy whipping cream

For Serving (Optional):