This is also adapted from "Martin Yan Quick and Easy," based on what I had in the house. It was tasty.
1/2 c. vegetable broth
1 1/2 Tbsp. fish sauce (to make purely vegetarian, substitute soy sauce)
2 tsp. chili garlic sauce
1 tsp. sugar
1 Tbsp. veg oil
1/2 yellow onion, chopped
3/4 green beans, cut into 2-inch lengths
1/2 red pepper, seeded and cut into thin strips
1 package firm tofu, drained and cut into cubes
To make the sauce, combine all the ingredients in a small bowl and mix well.
Place a stir-fry pan over high heat until hot. Add the oil, swirling to coat the sides. Add the onion and cook, stirring, until slightly soft, about 1 minute. Add the beans and stir-fry 3-4 minutes. Add a few drops of water if the pan is dry. Add the bell pepper, tofu and sauce and cook, stirring, until beans are tender, another 5 minutes.