Preheat oven to 325 degrees Fahrenheit and line a baking sheet with parchment paper. If your dates are hard, soak them in boiling water for 10 minutes.
In a large bowl, whisk together the oats, seeds, almonds, and salt.
In a food processor, combine dates, peanut butter, maple syrup, oil, and vanilla. Process until smooth. Combine with the oats and place on the prepared baking sheet.
Bake for 20 minutes, then let it cool completely to harden. Break it up into pieces and bake for 5 minutes, cool, mix it around, then bake another 5 minutes. Keep repeating this process (I usually do 2-3 times) until you've achieved the texture you want (more means it will get crispier). Keep in mind that it hardens when cooled.