1/4tspground nutmegSubtle warmth that complements cinnamon.
1/2tspsaltBalances sweetness and enhances flavors.
1tbspcornstarch or arrowrootStabilizes and firms the filling slightly.
1tsplemon juice (optional)Brightens and lifts the overall flavor.
For the Crunchy Topping
1cuprolled oatsProvides hearty crunch and texture in the topping.
1cupchopped pecans or walnutsAdds buttery crunch and nuttiness.
1/3cupbrown sugar or coconut sugarCaramelized sweetness for the topping.
4tbspvegan butter, meltedBinds the topping and gives golden color.
1/4cupall-purpose flour or oat flourHelps hold the crumble together.
1/2tspground cinnamonExtra warming spice for the topping.
pinchsaltBalances the sweeter elements of the crumble.
Method
Preparation
Preheat the oven to 375°F (190°C). Lightly grease your baking dish and set it aside.
Wash and peel the sweet potatoes, then cut them into uniform chunks for even cooking.
Place the sweet potato chunks in a large pot, cover with water, bring to a boil, then simmer until tender (about 15–20 minutes).
Drain the sweet potatoes in a colander and return them to the pot or a large mixing bowl.
Add the plant milk, vegan butter, maple syrup, vanilla extract, ground cinnamon, ground nutmeg, salt, lemon juice (optional), and cornstarch or arrowroot.
Mash the mixture until smooth with a potato masher or use a handheld mixer for an extra-smooth texture. Taste and adjust seasoning if needed.
Transfer the mashed sweet potato mixture to the prepared baking dish and smooth the top with a spatula.
Topping
In a medium bowl, combine the rolled oats, chopped pecans or walnuts, brown sugar or coconut sugar, melted vegan butter, all-purpose flour or oat flour, ground cinnamon, and pinch of salt. Mix until the topping is crumbly and evenly combined.
Sprinkle the oat-nut topping evenly over the sweet potato layer.
Baking
Bake for 20–25 minutes until the topping is golden and the edges are bubbly.
Remove from the oven and let rest for 5–10 minutes before serving to set slightly.
For a classic marshmallow-topped variation, check out Sweet Potato Casserole with Marshmallows. This dish can be frozen unbaked for up to 3 months, thaw overnight before baking, and adjust baking time as needed.