01 - Preheat oven to 350°F. Lightly grease a 9-inch baking dish with cooking spray or a small amount of oil.
02 - Whisk together pumpkin purée, maple syrup, almond milk, cornstarch, cinnamon, nutmeg, ginger, cloves, salt, and vanilla in a large bowl until completely smooth and no lumps remain.
03 - Pour the pumpkin mixture into the prepared baking dish, using a spatula to spread evenly and smooth the surface.
04 - Combine rolled oats, chopped nuts, almond flour, melted coconut oil, coconut sugar, cinnamon, and salt in a separate bowl. Mix with a fork or fingers until evenly moistened and crumbly.
05 - Sprinkle the oat-nut mixture evenly over the pumpkin base, covering the entire surface.
06 - Bake for 30 minutes until the topping is golden brown and the pumpkin filling is set around the edges but still slightly jiggly in the center.
07 - Let cool for at least 15 minutes to allow the filling to set. Serve warm or refrigerate for a chilled dessert.