Can I use red potatoes for au gratin potatoes?

Red potatoes will work ok. The russet, especially from Idaho has a higher starch and solids content as well as less moisture than a red, so it is nicely suited for Au gratin, since it tends to stick together for the layering of potatoes in Au Gratin or scalloped dishes.

Check out our All Things Au Gratin page for more information by clicking the picture below.