Ingredients
Method
Preparation
- Preheat your oven to 400°F (200°C). Butter or oil a 9×13-inch baking dish.
- In a large bowl, toss the butternut squash and apple slices with olive oil (or melted butter), maple syrup, cinnamon, nutmeg, salt, and pepper until evenly coated. Let sit for 5 minutes.
- Layer half the squash in the prepared dish, slightly overlapping slices. Add a single layer of apples, then remaining squash and apples to evenly layer the dish.
- In a small bowl, make the oat topping: combine rolled oats, flour, cold diced butter, and chopped nuts if using. Rub the butter into the oats until it resembles coarse crumbs.
- Scatter the topping evenly over the layered squash and apples. Drizzle the remaining 1 tsp of maple syrup on top.
Baking
- Bake for 35–45 minutes, or until the topping is golden and the squash is fork-tender. Tent lightly with foil if the topping browns too fast.
- Optional: Sprinkle grated Parmesan or crumbled feta over the gratin 5 minutes before the end of baking.
Notes
This gratin holds well for leftovers. Refrigerate in an airtight container for 3–4 days. Freezes well for 2–3 months. For a crisper top, finish under the broiler for 1–2 minutes, watching closely.
