Whisk together ingredients for dressing in a big salad bowl, then add chopped kale. Toss with tongs, massaging the leaves, then set aside while you cook steak.
Season the steak well with kosher salt and black pepper, pressing into meat on both sides. in a skillet over medium high heat, warm 2 tbs. olive oil and when hot, add in steak. cook for 2 minutes without moving, then flip and cook another 2 minutes. turn heat down to low and cook another 5 minutes, then flip and cook another 5 mins. remove from pan and let cool for 5-10 minutes before slicing.
In salad bowls, divide tossed kale and top with sliced steak, sliced avocados + chopped peanuts!