Preheat oven to 350°F. Line an 8" × 8" baking dish with parchment paper.
In a large bowl, combine the rolled oats, oat flour, pumpkin seeds, chocolate chips, cinnamon, sea salt, and nutmeg.
In a smaller bowl, combine the milk, brown rice syrup, and maple syrup.
Add the wet ingredients to the dry mixture, stirring until well combined.
Transfer the mixture to the prepared pan, and press it down until evenly distributed. Using a sharp knife, cut to mark out the bars before you bake them to make it easier to fully cut and remove the bars once baked. (I usually mark out 16 bars, but you can make whatever size you like.)
Bake for 20 minutes, then remove from oven and let bars cool in pan. Once cool, use a sharp knife to fully cut the bars, then remove with a spatula and enjoy!