Lentil Walnut Burgers

This comes from Mollie Katzen's site. She indicates that they are good frozen (after cooking them first) and with our without cheese.

3/4 cup dry lentils (any kind)
1 1/2 cups water
2 tablespoons cider vinegar
1 tablespoon olive oil, plus extra for sautéing the patties
1 cup minced onion
4 large cloves garlic, minced
10 large mushrooms, minced
1/2 cup very finely minced walnuts
1 teaspoon salt
1/2 pound spinach, finely minced (optional)
1 teaspoon dry mustard
Freshly ground black pepper to taste
1/2 cup bread crumbs, wheat germ, or rolled oats

1. Place lentils and water in a small saucepan and bring to a boil. Lower the heat and simmer, partially covered, for about 30 minutes, or until the lentils are soft and the liquid is gone. Transfer to a medium-sized bowl, add vinegar, and mash well.
2. Heat the oil in a medium-sized skillet. Add onion and sauté over medium heat for about 5 minutes. Add remaining ingredients except the bread crumbs, wheat germ, or oats, and sauté 5 to 10 minutes or until all the vegetables are tender. Add the sautéed mixture and bread crumbs, wheat germ, or oats to the lentils and mix well. Chill for about 1 hour before forming patties.
3. Form 4-inch diameter patties. (It might be easiest to do this if you wet your hands.) Heat a small amount of olive oil in a skillet, and sauté the patties on both sides until heated through and crispy. You can also just broil them for about 5 to 8 minutes on each side.

 **These were easy to make. I used canned lentils and used my food processor to mince the mushrooms and walnuts. I didn't add spinach. I used rolled oats and sauteed rather than broiled the burgers. They kept their shape well. Keeper.