Prepare 15-16 muffin cups, lining with muffin liners. Preheat oven to 350 degrees. In a mixing bowl, combine the oats, oat flour, ground chia, cinnamon, baking soda, and sea salt. Stir to combine. Add the remaining ingredients and stir until thoroughly combined. Using a cookie scoop, place mounds of the batter (about 1/4 - 1/3 cup) in each cup. Use a spatula or your fingers to lightly pack in mixture (dampen fingers to make it easier). Bake for 20 minutes. Remove and let cool in pan for about 5 minutes, then transfer to a cooling rack. Enjoy warm or cooled. Store in an airtight container in the fridge.