Scalloped Yukon Gold and Sweet Potato Gratin with Fresh Herbs

Ingredients

• ¾ teaspoon freshly ground black pepper
• 1 ¼ cups (packed) coarsely grated Gruyére cheese
• 1 ½ pounds medium Yukon Gold potatoes
• 2 cups heavy whipping cream
• ¼ cup (1/2 stick) butter
• 2 cloves garlic
• 1 tablespoon fresh Italian parsley
• + 5 more ingredients
• • 1 ½ pounds medium orange-fleshed sweet potatoes, such as Louisiana, jewel, or garnet yams
  • 1 tablespoon fresh rosemary
  • 1 tablespoon fresh sage
  • 1 tablespoon fresh thyme
  • 1 ½ teaspoons fine sea salt

Fill large bowl with cold water. Working with 1 Yukon Gold potato at a time, peel, then cut into 1/8-inch-thick rounds and place in bowl with water. Repeat with sweet potatoes. Combine cream, butter, and garlic in medium saucepan; bring to simmer. Remove from heat. Mix all herbs in small bowl. Mi...

View full recipe at Epicurious