Preheat your oven to 350°F. Line a baking sheet with parchment paper.
In a large bowl, whisk together the oats, flour, cinnamon, baking soda, and salt. You should see the cinnamon streak through the oats like ribbons – that means it's evenly distributed.
In a medium bowl, mash the bananas well, then stir in the applesauce, melted coconut oil, honey, egg, and vanilla until smooth. It will look a little thinner than you expect – that's right.
Pour the wet ingredients into the dry. Stir with a wooden spoon until just combined – no dry streaks left, but don't overmix. Fold in the cranberries and pecans.
Let the dough rest on the counter for 10 minutes. This step is critical: it lets the oats absorb the liquid so the cookies bake up thick and soft instead of flat and dry. After resting, the dough should look noticeably thicker and less glossy.
Drop rounded tablespoons of dough onto the prepared baking sheet, spacing them about 2 inches apart. Do not flatten the scoops – they will spread slightly in the oven but stay thick.
Bake for 12 to 14 minutes. The edges should be set and just starting to turn golden. The centers will look soft and matte – not wet, but not fully firm. The kitchen will smell like spiced oatmeal and warm bananas.
Let the cookies sit on the baking sheet for 5 minutes – they will continue setting as they cool – then transfer to a wire rack. If you try to move them immediately, they will fall apart.