Preheat the oven to 300 degrees. Prepare a baking sheet with parchment paper.
Grind 1 1/4 cups whole oats into oat flour using a wheat grinder, blender, or food processor.
Spread the oat flour and whole oats onto the baking sheet evenly. Bake until lightly toasted. (You will be able to smell it!)
While the oats are toasting, cut the 5 dates into small pieces (the smaller the better, or adjust based on your preference).
In a large bowl, combine the toasted oats, cut up dates, and all the rest of the ingredients except the water and flaky salt.
Using a hand mixer, begin mixing all the ingredients together on low speed. Gradually increase speed until everything is incorporated.
The mixture should be a little bit crumbly, but not too much (see photo). If it is too crumbly, add the water 1 tbsp at a time to desired consistency. You will probably need at LEAST 1 tbsp, but I needed 2.
Cover a small baking dish or plate with more parchment paper.
Form the mass of ingredients into a rough ball and weigh it. It should weigh about 19 oz total.
Divide the dough into 2.35 oz portions for each bar (or your total ingredient weight divided by 8).
Take each portion and form it into a rough clump first. Then, mold it and pat it until it forms a bar. It doesn't have to be perfect!
Put your finished bars on the prepared dish. Top with more honey and flakey sea salt, then let bars set in the fridge for at least an hour before enjoying.