Heat a large skillet over medium-high heat. Sprinkle both sides of steak with salt and pepper. Coat pan with cooking spray. Add steak to pan; cook 5 minutes on each side or until desired degree of doneness. Place steak on a cutting board; let stand 5 minutes. Cut steak diagonally across grain into thin slices.
While steak cooks, combine sour cream and next 5 ingredients (through juice) in a small bowl, stirring with a whisk. Stir in chives and parsley. Serve sour cream mixture with steak.
I'm not a huge fan of horseradish but the sauce was great. I added some onion powder to the salt and pepper on the steak and grilled it on our Traeger with hickory pellets. 10 minutes per side. Added a nice smokey quality to the meat. Will definitely make again - so easy!
One of my friends made this for our Cooking Light group. The meat itself was just OK. I would much prefer it grilled on the bbq. The sauce, however, was very good. It could be used on steak, chicken or fish, so I am keeping mostly for the sauce.
Absolutely delicious. Broke out the bbq for the first time this season and grilled the flank steak to a perfect medium rare. The lemon sauce was so delicious. Also served the browned better asparagus from the same issue and saffron new potatoes. My family called this meal a perfect 10. Great for Spring - so fresh tasting. Poured a rose. Sunday heaven.