Use a food processor to grind the oats into a coarse meal. Empty into a large mixing bowl.

In the same food processor, chop the garlic and mushrooms. Add to the bowl.

Process the nuts until very finely chopped and beginning to form a paste. Add a little bit of oil or water if needed to help things along. (My food processor doesn't have enough "umph" to make nut butter, i stopped when the blade lost its effectiveness).

Add the nuts, chili powder, salt and pepper to the mixing bowl.

Use your hands to mix the ingredients and evenly distribute the spices throughout. It will eventually form a ball.

Refrigerate the mixture for at least 10 minutes. Then form into 4 - 6 patties.

To cook, add some oil to a skillet over medium high heat and cook the burgers for 3 - 5 minutes a side or until nicely browned on both sides and heated through.