From My Carolina Kitchen
Preheat grill to medium. In a food processor, pulse ¼ cup blueberries, ¼ cup nuts, vinegar, shallot, sugar and a pinch of kosher salt to form a chunky paste. With the motor running, add the oil until incorporated. Transfer the dressing to a large bowl and set aside.
Sprinkle steak with salt and pepper. Grill the steak about 5 minutes per side for medium-rare, 6 minutes per side for medium. Let rest on a plate for 5 minutes before slicing.
Add spinach to the bowl with the dressing and toss to coat. Taste for seasonings and add more salt and pepper if desired. Divide the salad among 4 plates. Thinly slice the steak crosswise. Top the spinach with the steak, feta cheese and remaining blueberries and walnuts. Perfect with a glass of red wine.
Adapted from Eating Well – serves 4