Cook a root vegetable au gratin
How to cook a root vegetable au gratin Watch this how-to video as Whole Foods Market’s Martha Drayton makes a creamy root-vegetable au gratin. This au gratin recipe is perfect for a winter side dish. Learn how to makes this root vegetable dish for dinner tonight. You will need the following ingredients: sweet potatos, yukon potatoes, celery root, vegetable stock, thyme, and heavy cream.