2 cups half-and-half
2 cloves garlic, minced
1 teaspoon salt
1/2 teaspoon freshly ground black pepper
1/2 teaspoon dried thyme
1/2 teaspoon dried oregano
1 pinch nutmeg
3 medium potatoes
3 medium red beets
1-1/2 cups grated mozzarella cheese
1 cup grated Parmesan cheese
1 egg INSTRUCTIONS:
In a small saucepan, bring the half-and-half to a simmer. Add the garlic, salt, pepper, thyme, oregano, and nutmeg, then set the pan aside to cool. Generously butter a 1-½-quart round casserole and preheat the oven to 375°F.
Wash and peel the potatoes and beets. Slice them into ⅛-inch-thick rounds. Arrange the potatoes in one layer, in the bottom of the casserole. Combine the cheeses and sprinkle ⅓ cup over the potatoes.
Add a layer of beets, overlapping as needed, and sprinkle with another 1⁄3 cup of cheese. Alternate the layers of potatoes and beets, with 1⁄3 cup of cheese between each, until they reach the rim of the casserole.
Press the layers down to compact them and top with the remaining cheese. When the half-and-half mixture has reached room temperature, add the egg, whisking vigorously, and pour the mixture over the potatoes and beets.
Cover the casserole loosely with foil and set it on a large baking sheet.
Bake for 1 hour, or until the vegetables feel tender when pierced. Remove the foil and turn the oven to broil. Broil for 3 to 5 minutes, or until the cheese is lightly browned.
Remove from the oven and let stand for 15 to 20 minutes. Cut into wedges and serve.