In 4-quart Dutch oven or stockpot, heat water and potatoes to boiling.
Simmer 5 minutes; drain.
In 2-gallon resealable food-storage plastic bag, mix oil, mustard, thyme, garlic, salt and pepper.
Add potatoes; seal bag and shake gently to coat.
Add cornmeal; shake again to coat potatoes.
Arrange potatoes in single layer in pan.
Roast 25 to 30 minutes, stirring every 10 minutes, until potatoes are tender and golden brown.
Notes & Wine Advice
Make-Ahead Magic
The potatoes can be prepared up to 24 hours in advance—except do not toss with cornmeal. Refrigerate bag with potato mixture until ready to bake, then coat with cornmeal and bake as directed.
Festive Touch
If you're using fresh thyme, save a few sprigs to use as a pretty and festive garnish for the roasted potatoes.
Festive Touch
Serve these flavorful potatoes with Rosemary Prime Rib Roast (see recipe) or your favorite steak or pork chop recipe.