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.

1 cup dried lentils
1 tablespoon olive oil
1 cup finely chopped onion
4 cloves garlic
1 teaspoon ground cumin
1/2 teaspoon each salt and pepper
1 cup finely chopped walnuts
1 cup finely chopped mushrooms
1/4 cup finely chopped cilantro
1/2 cup bread crumbs