I have been making the Lentil Chili from Mollie Katzen's book Still Life With Menu for years. Not only is it delicious but it's dirt cheap to make. And since overweight people have a larger carbon footprint (eating more food and using more gasoline to drive instead of walk or bike), I thought this would be a good Earth Day recipe, since eating fewer meat-based meals also cuts down on energy consumption.

Mollie Katzen's Lentil Chili
4 cups dried lentils
6 to 7 cups water (tomato juice can be substituted for about 2 cups water)
One 1-pound can tomatoes, or 3 to 4 large ripe fresh tomatoes (peeling optional), chopped
2 teaspoons ground cumin
1 teaspoon paprika
1 teaspoon dried thyme (or about 1 tablespoon minced fresh thyme)
1 1/2 tablespoons minced garlic
2 cups chopped onion
1 1/2 to 2 teaspoons salt
6 tablespoons tomato paste
2 tablespoons balsamic vinegar or cider vinegar
Freshly ground black pepper to taste
Crushed red pepper to taste

Optional Toppings:

* Thin slices of sharp cheddar
* Sour cream
* Salsa
* A handful of toasted cashews
* Minced fresh parsley and/or cilantro

Place lentils and 6 cups of water in a large soup pot or Dutch oven. Bring to a boil, partially cover, and lower the heat to a simmer. Leave it this way for about 30 minutes, checking it every now and then to be sure it isn't cooking any faster than a gentle simmer. (You can chop the vegetables during this time.)

Add tomatoes, cumin, paprika, thyme, garlic, and onions. Stir, mostly cover again, and let it cook for another 30 minutes or so. Check the water level as it cooks, and add water or tomato juice in 1/4-cup increments as needed, to prevent dryness. Stir from the bottom every several minutes during the cooking.

Add salt and tomato paste. Stir and continue to simmer slowly, partially covered, until the tomato paste is all blended in... about 10 minutes.

Stir in the vinegar, black pepper, and crushed red pepper, adjusting the seasonings to taste. Serve hot, with some or all of the optional toppings.

From Still Life With Menu, Ten Speed Press, paperback, 1994