1. In a large bowl, place ground meat.
2. In the bowl of a food processor, pulse sauteed mushrooms until chunky. Add mushrooms, eggs, crumbs, parsley, salt, pepper, and garlic powder to the meat. Fold together until combined (do not overmix).
3. To pan sauté: Heat a large frying pan with two tablespoons avocado oil. Form patties and sauté for five minutes on each side, until cooked through.
4. To cook in the oven: Preheat oven to 350 degrees Fahrenheit. In a baking pan, rub a small amount of oil on the bottom. Form patties and place in the pan. Cook for 15 minutes on each side until cooked through.