With less than a handful of ingredients, and a little time to slice the potatoes, this really goes together quickly. The sweet potatoes absorb the chipotle infused whipping cream while they bake which produces a delightful flavor.
Sweet Potato Gratin
2 C heavy cream
1Tb chipotle chile puree
4 medium sweet potatoes, peeled and sliced 1/8" thick
Kosher salt and fresh ground pepper
Thinly sliced green onions for garnish
Preheat the oven to 375 degrees.
Whisk together the cream and chipotle puree.
In a 10-inch square baking dish with 2-inch-high sides, arrange an even layer of potatoes on the bottom of the dish, drizzle with 3 tablespoons of the cream mixture, and season with salt and pepper. Repeat with remaining potatoes, cream, and salt and pepper to form 9 to 10 layers. Press down on the gratin to totally submerge the potatoes in the cream mixture.
Cover with aluminum foil and bake for 30 minutes. Uncover and continue baking for 30 to 45 minutes, until the cream has been absorbed, the potatoes are cooked through and the top is browned. Remove from the oven and let rest for 10 minutes before slicing.