Combine the falafel mix and water. Cover and refrigerate for 1 hour. If batter is too thick, slowly add in up to a half cup more of water until desired consistency is reached.
Stir the remaining ingredients into the burger "batter".
Using a cookie scoop, spoon a full scoop onto a greased baking sheet. Flatten the scoop so that it looks like a hamburger patty. The patties will be looser than traditional veggie burgers, but they should stay together and not be runny. Continue with the rest of the batter. Bake at 350 degrees for 20 minutes.
To serve, slice a pita in half. Spread with the Garlic Dill Aioli. Insert a falafel burger and a few of the Pickled Onions.
Combine all ingredients in a small bowl and stir well.
For the Pickled Onions
Combine all ingredients in a small bowl and set aside for at least 20 minutes (the longer, the better).