Sweet Potato/Yam Gratin

"A new take on potatoes au gratin"
Serves 4 | Prep Time 30 minutes | Cook Time 120 minutesWhy I Love This Recipe
Deliciously creamy and cheesy - it was a big hit a Thanksgiving last year. Even people who don't normally like sweet potatoes thought it was delicious.
Submitted by: "Susan Kalkhuis-Beam"
Ingredients You'll Need
cooking spray or butter for pan
2 cups heavy cream
1 teaspoon salt
3 pounds sweet potatoes/yams (peeled)
1/2 cup shredded Gruyere cheese
Directions
Preheat oven to 350 and spray or butter a 9x9 inch ceramic baking dish. Place baking dish on baking sheet.
Stir together heavy cream and salt in a large bowl.
Slice sweet potatoes thinly with a mandoline and add slices to bowl with heavy cream. Make sure slices are coated with cream mixture.
Layer 1/3 of sweet potatoes in the pan. Sprinkle with half of cheese. Repeat with another 1/3 of yams and remainder of cheese. Top with remaining yams. Pour any remaining cream mixture over top.
Bake, uncovered, on center rack of oven 30 min. Remove from oven.
Press fork or spatula carefully against top layer to allow liquid to flow over top. Return pan to oven; bake 30 min. Remove pan; press top layer to allow liquid to flow over top. Return pan to oven; bake 30-40 min or until yams are tender. Remove from oven; let rest 15 min.