To make the sweet hot mustard, in a bowl, whisk both mustards, vinegar, brown sugar and hot sauce. Reserve 2 Tbs. mustard for the salad; refrigerate the rest for up to 4 weeks.

To make the salad, in a large bowl, whisk the smoked onion jam, vinegar, the 2 Tbs. sweet hot mustard, 3 Tbs. of the olive oil, salt and pepper.

In a large nonstick fry pan over medium-high heat, warm the remaining 2 Tbs. olive oil. Add the brussels sprouts, salt and pepper. Cover and cook, stirring occasionally, until the sprouts are just tender and lightly browned, about 11 minutes. Transfer to the bowl with the vinaigrette, add the walnuts and apples and toss. Season with salt and pepper. Arrange on a platter and serve.


NOTES: Black walnuts have a more bitter, earthy flavor than traditional walnuts, although either will work well in the salad. Here, the brussels sprouts are pan-roasted on the stovetop to conserve oven space. If you prefer to cook them in the oven, toss them with 2 Tbs. olive oil, place on a foil-lined baking sheet and roast at 450ºFfor about 15 minutes.