Swell Sweet Potato Thai Stew

I found this recipe at VegNews and it seemed interesting.  Making up a big batch of stew is a good lead in to Eating In Week.

Saute in a large pot:

1 tablespoon olive oil
1 medium onion, quartered and thinly slices
4 to 6 cloves garlic, minced
1 medium green or red bell pepper, cut into narrow strips
1⁄2 teaspoon red or green curry paste, more or less to taste
2 teaspoons minced fresh ginger
2 stalks lemongrass (optional)
1 teaspoon salt

Then add:

3 medium sweet potatoes (about 1-1⁄2 pounds), peeled and diced
3 cups water
1-1⁄2 cups frozen green beans (I used soybeans)

Bring to a boil, then lower heat and simmer 15 minutes or until potatoes are soft.  The add one 13.5-ounce can light coconut milk, 2 tablespoons natural peanut butter and one 8-ounce package Thai peanut-flavored baked tofu, diced (optional).  Garnish with cilantro leaves.  Serve with brown rice, or over brown rice.