Preheat the saute pan over medium heat and add 1 tablespoon of avocado oil. Once hot, add the apples, pumpkin pie spice, and salt to the pan. Cook until the apples are slightly softened, about 2-5 minutes. 

Preheat your oven to 350 degrees F.

Add oats, walnuts, 2 tablespoons of oil, and maple syrup to a food processor. Pulse until crumbles form and are able to hold together if pressed. 

Place apples down and top with crumble mixture on a baking sheet or small baking pan. 

Bake for 15-20 minutes or until the crumble is golden brown.

Serve on top of yogurt or eat by itself!