Preheat the oven to 350 °F (180 °C). Line 2 mini-muffin pan with mini paper liners. Slightly oil each paper liner. Set aside.
In a mixing bowl, add peanut butter, maple syrup, and vanilla if used. Stir until smooth.
Add in rolled oats, chia seeds, sunflower seeds, pumpkin seeds, chocolate chips, and salt.
Stir to form a thick and sticky batter.
Use a cookie dough scoop or tablespoon to scoop out and pack some of the batter - packing matters if you want the bites to stick together in the oven.
Release the mixture in each muffin paper liner - I made 21 of them.
Bake the bites in the oven for 15 minutes at 350 °F (180 °C) until golden brown on top.
Remove the pan from the oven and cool down in the pan without touching the bites - they firm up as they cool down.
