For the Flank Steak

Flanks steaks, grass-fed if possible (number depending upon how many you are serving; plan for leftovers!)
Montreal steak seasoning (see notes for options)

For the Greeked-Out Gorgonzola and Tomato Salsa

1/4 cup olive oil
3/4 cup (a 6-ounce cup) plain Greek yogurt (may use fat content of choice)
4 ounces blue cheese, crumbled (I often use gorgonzola, but any basic blue is fine)
1 teaspoon Worcestershire sauce
2 garlic cloves, minced (If I’m in a hurry I sometimes skip this)
Kosher or sea salt and freshly ground pepper (I use about a 1/2 teaspoon of sea salt and a few turns of the pepper grinder, but use how much you like)
2 tablespoons fresh chives (optional but provide great added flavor)
Buttermilk for thinning to desired consistency (can use regular milk or even water–I like approximately 3 tablespoons of buttermilk)
A pint box of tomato grapes
Chopped chives or parsley, for garnish

Allow steaks to sit at room temperature for about 30 minutes prior to grilling. Sprinkle seasoning over both sides of the steaks. Over high heat, grill for approximately 6-8 minutes per side for medium rare. This will depend a bit on the thickness of the steaks. (Our last steak was about 1-inch thick and took the higher end of this range.) Flank steak will be more tender when cooked to medium rare.
Allow the steak to rest for five minutes before slicing to allow the juices to redistribute. Then, slice thinly across the grain. Spoon the Greeked-Out Gorgonzola and Tomato Salsa over the top.

In a large bowl, whisk together the oil, yogurt, Worcestershire, garlic, and salt and pepper, to taste. Stir in the blue cheese and chives, then add a little buttermilk to reach your preferred consistency. Cover and refrigerate at least 1 hour before serving. Tip: It’s a good idea to keep the dressing on the thick side, as the juice from the tomatoes will thin it slightly. You can thin more for use as a salad dressing, if you like.
When ready to serve, cut the amount of tomatoes you wish to use in halves or quarters. Then, toss the tomatoes with the dressing to coat and sprinkle with additional herbs, if desired. The remaining dressing will be perfect on a big dinner salad topped with leftover sliced steak for an easy dinner later in the week.

As an option, The Herb Shop at Lancaster Central Market offers an all-natural version of Montreal Steak Seasoning called Quebec Seasoning. I have also tried and enjoyed an all-natural version from The Mystic Blue Spice Company.