Preheat your oven to 250 degrees F (120 degrees C) and coat 2 baking sheets with nonstick cooking spray.

Combine brown sugar, pumpkin pie spice, rolled oats, almonds, and pecans in a large bowl.

Mix applesauce, honey, and vanilla extract in another large bowl.

Stir the oat mixture into the applesauce mixture until granola begins to form clusters.

Spread the granola evenly onto the prepared baking sheets.

Bake in the preheated oven, stirring every 20 minutes, until lightly browned and crispy (about 1 hour).

Remove from the oven and cool the granola to room temperature.