In a large bowl, combine oats, chia seeds and peanuts. Add brown rice syrup (or honey) and mix to combine. Add melted peanut butter and mix until moistened. This works as a perfect, simple granola bar, but you can also throw in any add-ins at this time. Fold them into the dough. You may need to get in there with your hands and work the granola dough! If dough is still too dry (this can depend on your ingredients) add more peanut butter or syrup (or honey) 1 tablespoon at a time until moistened.
Press dough in a greased (non-stick spray) 9 x 13 baking dish. Bake for 25 minutes.
These would also work as a great no-bake granola bar, but I liked how they came together and the chocolate chips melted as they got warm. If you want to make no-bakes, simply press the dough into the pan and refrigerate for 60 minutes.