Heat the oven to 350 degrees. Line a 8-inch square baking pan with parchment paper or grease with oil spray.
In a large bowl whisk together the applesauce, almond butter, and maple syrup. Once combined, whisk in the milk.
With a rubber spatula or large spoon, stir in the oats, quick oats, flax, hemp seeds, baking powder, salt, and cinnamon. Once combined, stir in any additional seeds, nuts, and dried fruit.
Dump the batter into the prepared pan and spread into an even layer.
Bake until golden brown around the edges, 30 to 35 minutes.
Let cool for at least an hour then cut into bars. I usually cut them into 8 large rectangular bars, but you can also cut them into smaller squares if you'd like.
Store bars in an airtight container at room temp for one day or in the fridge for 5 days. Individually wrap and freeze for up to 2 months. To defrost, leave in the fridge for a day or on the counter for an hour. Also good if you microwave until warm.