Yield: 10 to 12 servings
Nonstick spray
5 tablespoons unsalted butter
1 pound turnips, end trimmed and peeled
1 pound parsnips, root end trimmed and peeled
1½ pounds golden beets, ends trimmed and peeled
1½ pounds red beets, ends trimmed and peeled
3½ ounces plus 1 ounce freshly grated Gruyere cheese, separated
3½ ounces plus 1 ounce freshly grated Parmigiano-Reggiano, separated
6 ounces fresh goat cheese (chevre)
1½ tablespoons Dijon mustard
2 cups heavy whipping cream
1 teaspoon ground fennel
1 teaspoon ground caraway
1 teaspoon kosher salt
½ teaspoon freshly ground black pepper
2 tablespoons fresh dill, chopped finely
1 tablespoon fresh thyme, chopped finely
1 cup panko bread crumbs
1½ ounces raw walnuts (approximately 1/3 cup), chopped finely
1. Adjust an oven rack to the middle position, then preheat the oven to 375ºF.
2. Grease the bottom and sides of a 11×16-inch baking dish.
3. Add butter to a small sauté pan and heat over medium-high heat. The butter will foam up, and then subside. Swirl occasionally. After a minute or two, the butter will begin to turn golden brown. Once the butter has browned remove from heat and let cool.
4. Using a mandoline, slice the turnips, parsnips, golden beets and then red beets (make sure you do the red beets last!) 1/16 inch thick. As you slice, make separate piles (or bowls) for each ingredient, including separating the red from golden beets.
5. Add the 3½ ounces of Gruyere and Parmigiano-Reggiano and the goat cheese to a small bowl. Mix thoroughly with your fingers. It will be a little clumpy; that’s okay.
6. Add the Dijon mustard and the cream to a small bowl. Whisk to combine.
7. Add the fennel, caraway, salt, pepper, dill and thyme to a small bowl. Mix to combine.
8. Pour the now cooled brown butter into a small bowl. Add the panko, walnuts and the 1 ounce of both the Gruyere and Parmigiano Reggiano. Stir to combine.
9. Time to layer!
- Layer the bottom of your pan in overlapping rows of red beets. Each red beet should overlap the next slice about 4/5 of the way. Once the bottom of pan is completely covered in beets, any leftover red beet rounds can be slipped/tucked into any gaps in the layering.
- Gently press the layer with your open palms to make sure it’s level and compacted
- Evenly drizzle 1/3 of the Dijon cream (that’s 2/3 cup)
- Sprinkle over 1/3 of your spice/herb mixture.
- Top with 1/3 of the cheese mixture, pinching and crumbling it over the beets with your fingers, dispersing as evenly as possible.
- Layer the golden beets in the same way as you did with the red beets.
- Gently press the layer with your open palms to make sure it’s level and compacted
- Evenly drizzle 1/3 of the Dijon cream (that’s 2/3 cup)
- Sprinkle over 1/3 of your spice/herb mixture.
- Top with 1/3 of the cheese mixture, pinching and crumbling it over the beets with your fingers, dispersing as evenly as possible.
- Layer the parsnips in the same way you did the beets. Once you are out of parsnips, start on the turnips.
- Gently press the layer with your open palms to make sure it’s level and compacted
- Evenly drizzle the remaining 1/3 of the Dijon cream (that’s 2/3 cup)
- Sprinkle over the remaining 1/3 of your spice/herb mixture.
- Top with the remaining 1/3 of the cheese mixture, pinching and crumbling it over the turnips with your fingers, dispersing as evenly as possible.
10. Place the baking dish on a sheet tray. Spray a piece of aluminum foil and cover (spray side down) the baking dish. Place in the oven and bake for 1 hour. After 1 hour, remove the foil and sprinkle the brown butter panko mixture evenly atop the gratin. Bake, uncovered, for an additional 20 minutes. Remove from oven and let cool completely (yes, completely – sorry!) before serving.