Heat a large pan over high heat for 2-3 minutes. Add vegetable oil (I used extra virgin olive oil) and make sure it's shimmery, then sprinkle RawSpiceBar's Horseradish & Mustard Seeds across the surface and cover immediately, cook until seeds stop popping, about 1 minute.
Remove the cover, turn heat to medium and add diced cabbage and onion. Add vegan butter and salt, toss to combine, stirring until vegetables begin to wilt, about 4-5 minutes.
Turn heat down to medium-low and cover. Cook for 10-12 minutes, until the cabbage is tender. Remove heat.
Serve hot or at room temperature. Store extras in a sealed container in fridge.
Recipe by Compassionate Women at http://compassionatewomen.org/horseradish-mustard-cabbage/