Preheat your oven to 400 degrees and line a baking sheet with a Silpat liner and set it aside.

Make your flax egg and let sit while you prepare the other ingredients.

Take your rinsed and drained pinto beans, add everything but the oats and flax egg, take a potato masher or pastry cutter and smash up the mixture until it's half mush and some partial beans left. Then add your oats and flax egg, stir.   I usually let mine sit for a while to let the oats soak up any liquid. 

Take a large cookie scoop and scoop out even amounts on the Silpat lined baking sheet. Then take the palm of your clean hand and smash down the burgers to your desired thickness. Bake in the preheated oven for 15 minutes, then flip and bake for another 15 minutes, then remove from the oven.

This is best served with some avocado on top. Top with whatever you desire.