Preheat oven to 400-degrees. Spray a shallow baking dish with cooking spray.Cut potatoes into wedges. Combine mustard, paprika, cumin and garlic salt in a large bowl; mix well.
Add potatoes to bowl; toss until well-coated with mustard mixture.
Spread potato wedges in a single layer in prepared baking dish, leaving a little space between wedges.
Bake potato wedges for 10 minutes; turn. Bake for 10 minutes longer or until tender and crusty.
