Preheat the oven to 350ºF / 180ºC degrees and line two baking sheets with parchment paper.
Whisk together the oats, flour, cinnamon, nutmeg, baking soda, and salt in a large bowl.
In a medium bowl, whisk together the applesauce, brown sugar, melted butter, and egg.
Add the butter mixture to the flour mixture and mix until just combined.
Stir in the apples, cranberries, and pecans until evenly distributed.
Place 2-tablespoon-sized scoops onto the baking sheets, leaving a 2-inch gap between each one to allow for spreading.
Spray non-stick cooking spray onto a measuring cup and use it to gently press down the tops of the cookies.
Bake for 10–12 minutes, until the edges are beginning to brown and the tops are just set. Rotate trays if needed during baking.
Allow the cookies to cool completely on the trays.
Once cooled, whisk together the powdered sugar and orange juice, then drizzle generously over the cookies.