Place all dressing ingredients in a blender. Blend for 30-60 seconds or until smooth. Adjust to taste and set aside.
In a large bowl, combine kale, brussels sprouts, lemon juice, and a pinch of salt. Massage with your hands until kale softens a bit and changes color to a more vibrant green. Add half of the dressing and toss, then set aside.
Melt butter in a small skillet over medium-high heat. Add breadcrumbs and Parmesan. Stir constantly for 3-5 minutes, or until breadcrumbs are a light golden-brown. Stir in the steak seasoning and remove from heat.
Add the remaining half of the dressing to the salad and toss. Serve topped with breadcrumbs and chopped chives.
