Amy Sherman, author of the blog Cooking with Amy, suggests using a bottled mustard to prepare these roasted potatoes. If you're feeling more creative, try preparing your own mustard at home. Whichever kind you end up using, we think you'll be happy with the results.
EnlargeCredit: Amy Sherman / Cooking with Amy: A Food Blog
The Mustard Roasted Potato recipe was red potatoes tossed with Dijon
mustard, cumin, paprika, chili and cayenne. The potatoes roast in the
oven and become all crusty and delectable. It's a great technique and
can be endlessly varied. I've incorporated plain yogurt, fresh herbs,
and different kinds of mustard. I like the Moroccan mustard from Dulcet Cuisine
for this recipe because it has so much flavor you don't need to add any
additional spices, but feel free to experiment and try any spiced
mustard you like or add some spices.