Preheat oven to 350 ℉.
In a medium bowl, combine flour, baking powder, salt.
In a large bowl, combine maple syrup, vanilla, applesauce.
Add the dry ingredients to the wet ingredients 1/2 at a time, mixing gently until mostly incorporated.
Fold in almonds - you may need to use your hands to fully incorporate the flour and almonds, but don't knead the dough. Only mix until all the ingredients are just combined. Line a baking tray with parchment paper or a silicone baking liner.
Shape into a 9 x 5 inch rectangle that is 1/2 inch thick and place on baking tray.
Bake for 30 minutes, then remove from heat, let cool for 10 minutes. Reduce oven temperature to 325 ℉.
Once 10 minutes has passed, cut the log into slices (~1/2 to 3/4 inch thick) and return to the baking tray - stand biscotti upright, leaving spaces between each piece.
Bake an additional 20 minutes. If you want your biscotti extra crispy: once the 20 minutes is up, lay your biscotti face down and bake an additional 5 minutes on each side, or until they develop a light brown colour.
Remove from the oven and let them cool off completely.
Store in an air tight jar in the pantry for up to 1 month.