Sweet Potato Swiss Chard Gratin
Potato gratin is a satisfying classic, but we wanted a more nutritious version that wasn't swimming in cream.
WHY THIS RECIPE WORKS
We first replaced the regular spuds with their sweet, bright-orange relative, a rich source of vitamin A. But sweet potatoes got their name for a reason, so to mitigate some of their sweetness, we turned to earthy, slightly bitter Swiss cha...