Heat the oven to 350 degrees. Line a baking sheet with parchment paper or a silicone mat.
In a large bowl, mix the applesauce, egg, oil, maple syrup, vanilla, and almond extract.
Add the flax, seeds, oats, baking powder, salt, flour, and half of the sprinkles. Use a large spoon or rubber spatula to mix until everything is just combined.
Scoop the mixture into 12 cookies (about 2 heaping tablespoons each). Flatten the tops of the cookies with the back of the scoop/spoon then sprinkle the remaining sprinkles on each cookie.
Bake until the cookies no longer look wet in the center and are lightly golden brown around the edges, 12 to 14 minutes. (If you are using almond flour, they will need 3 to 4 more minutes longer.)
Let the cookies cool then store in an airtight container at room temperature for a day and then in the refrigerator for 4 days. Cookies can be frozen for 1 month.