Boil lentils until starting to soften. Drain and let cool.

In a cooking pan heat onion, mushroom, walnut, garlic, cumin, salt and pepper in olive oil. Cook for a couple minutes, then let cool.

Stir in cilantro, bread crumbs, and lentils. Then scoop out entire mixture into a bowl.

Form mixture into individual burger patties, and grill over medium heat in a frying pan.