2mediumbutternut squash, peeled, seeded, and thinly sliced
1cupheavy cream
1cupgrated Gruyère cheese
12grated Parmesan cheese
4leavesfresh sage, finely chopped
2clovesgarlic, minced
1teaspoonnutmeg
to tastesalt and pepper
2tablespoonsolive oil
12cup breadcrumbs (preferably panko)
for garnishfresh sage leaves
Instructions
Preheat the oven to 375°F (190°C). Grease a 9x13-inch baking dish with olive oil.
In a small bowl, mix together the heavy cream, minced garlic, chopped sage, nutmeg, salt, and pepper. Set aside.
Layer half of the sliced butternut squash evenly in the greased baking dish.
Pour half of the cream mixture over the squash, then sprinkle half of the Gruyère cheese on top.
Add another layer of the remaining butternut squash slices, followed by the rest of the cream mixture. Top with the remaining Gruyère cheese and sprinkle the Parmesan cheese evenly over it.
In a small bowl, mix the breadcrumbs with a tablespoon of olive oil and a pinch of salt. Sprinkle the breadcrumb mixture generously over the cheese layer for a crunchy topping.
Cover the baking dish with aluminum foil and bake for 30 minutes.
After 30 minutes, remove the foil and bake for an additional 15–20 minutes, or until the top is golden brown and bubbling.
Remove from the oven and let it cool for about 10 minutes before serving. Garnish with fresh sage leaves for added flavor and presentation.
Notes
Let the gratin cool for 10 minutes before serving for better slicing.