Instructions: Preheat the oven to 400 degrees.

Spray a roasting pan 3 times to coat with the vegetable oil.

Put the mustard, paprika, cumin, chili powder, and cayenne pepper in a large bowl. Whisk to blend. Prick the potatoes several times with the tines of a fork and add them to the bowl. Toss to coat the potatoes evenly. Pour the coated potatoes into the prepared roasting pan, leaving a little space between them.

Bake for about 45 minutes to 1 hour, until the potatoes are fork tender.

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