Layered three-cheese russet and sweet potato gratin

This recipe probably has the most going on it, of all the things I made for our Scandinavian dinner. The list of ingredients may make you skeptical, but trust me, they combine to make a lovely flavor that is more than the sum of its parts.

From The Swedish Table, by Helene Henderson

Ingredients:

• 2 tablespoons butter, divided
• 2 pounds baking potatoes (about 2 large), such as russet, peeled and sliced 1/8" thin
• 3 cloves garlic, peeled and grated
• fresh ground nutmeg to taste
• 3 teaspoons thyme, minced fine, divided
• 1 pound sweet potato (1 large), peeled and sliced 1/8" thin
• 3 tablespoons orange juice concentrate, thawed and divided
• 3 teaspoons adobo sauce from canned chipotle peppers, divided
• 1 cup cheese, such as Gruyere, mozzarella, or Parmesan, or any combination, freshly grated
• 1-1/2 cups heavy cream, divided
• salt and pepper to taste

Directions:

• Preheat oven to 400 degrees Fahrenheit.
• Rub botton of a 9 x 13-inch glass baking dish with 1 tablespoon butter.
• Add a third of the russet potatoes and season with salt and pepper to taste. Top with a third of the garlic, a third of the thyme, and a small sprinkling of nutmeg.
• Add a third of the sweet potatoes, season with salt and pepper, and brush with 1 tablespoon of orange juice concentrate and a third of the adobo sauce. Spread a third of the cheese on top and add a third of the cream.
• Repeat twice, creating three layers of potatoes, each ending with the cheese and cream. Dot top layer with remaining butter.
• Bake until potatoes are fork-tender, crisp, and golden on top, about 45-60 minutes. Cover dish with aluminum foil if the top begins to burn.

Serves 6-8.