Prepare the Brussels sprouts by trimming the woody ends and removing any damaged outer leaves. Either use a sharp knife to shred them finely or run them through a food processor with the slicing attachment.
Make the hot honey mustard dressing by whisking together the hot honey, whole grain mustard, Dijon mustard, apple cider vinegar, and olive oil in a small bowl until emulsified. Season with salt and pepper to taste.
Place the shredded Brussels sprouts in a large mixing bowl and pour about two-thirds of the dressing over them. Toss thoroughly to coat every piece – don’t be shy here, really get in there with your hands or tongs.
Let the dressed sprouts sit for 5-10 minutes to slightly soften and absorb the flavors. This brief marination makes a huge difference in texture and taste.
Add the red onion, dried cranberries, and most of the nuts to the bowl and toss again to distribute evenly throughout the salad.
Transfer to a serving bowl or platter and top with the cheese, remaining nuts, and a drizzle of the reserved dressing.
Taste and adjust seasonings as needed, adding more salt, pepper, or an extra drizzle of hot honey for more heat if desired.