Preheat oven to 350°F. Line a large baking sheet with parchment.
Stir oats, almond flour, baking powder, cinnamon, and salt in a mixing bowl.
Mash banana in a separate bowl. Whisk in almond butter, maple syrup, coconut oil, and vanilla.
Pour wet mixture over the dry ingredients. Mix until just combined.
Fold in chocolate chips and nuts until evenly distributed.
Scoop heaping tablespoonfuls, about 2 tablespoons each, onto the sheet, spacing 2 inches apart.
Flatten mounds slightly with damp fingers. Smooth edges for even baking.
Bake 11 to 13 minutes, until set at the edges and lightly golden.
Cool on the sheet 5 minutes, then transfer to a rack to finish cooling.
Notes
Variation ideas: Swap almond butter with peanut or sunflower seed butter. Add 1/4 cup dried cranberries or shredded coconut. Zest an orange into the batter for brightness. Storage: Keep in an airtight container at room temperature for 3 days or freeze up to 2 months.This recipe is an original creation inspired by classic Quick and Tasty Healthy Cookies flavors. All ingredient ratios and instructions are independently developed.