Skillet Hasselback Sweet Potatoes

Directions

1. Preheat oven to 425°. Cut thin slices lengthwise from bottom of sweet potatoes to allow them to lie flat; discard slices. Place potatoes flat side down; cut crosswise into 1/8-in. slices, leaving them intact at the bottom. Arrange sweet potatoes in a 12-in. cast-iron or other ovenproof skillet.
2. Stir together next 5 ingredients. Spoon half the butter mixture evenly over sweet potatoes. Bake 35 minutes.
3. Meanwhile, add herbs to remaining butter mixture. Toss bread crumbs with Parmesan. Remove skillet from oven. Spoon remaining butter mixture over potatoes; top with bread crumb mixture. Return to oven until potatoes are tender and topping is golden brown, 10-12 minutes. If desired, top with toasted nuts.