Ingredients

2 tablespoons vegetable oil

1 package (14 ounces) extra-firm tofu, drained, patted dry, and cut into 1/2-inch cubes

Coarse salt

2 red bell peppers, ribs and seeds removed, thinly sliced

1 small head green cabbage (2 pounds), quartered, cored, and thinly sliced crosswise

2 garlic cloves, slivered

1/4 to 1/2 teaspoon red-pepper flakes

2 tablespoon smooth peanut butter

1/4 cup soy sauce

1/4 cup rice vinegar

Leftover spaghetti from Tomato-Garlic Spaghetti

Preparation

Heat 1 tablespoon oil in a large nonstick skillet over high heat; add tofu and 1 teaspoon salt. Cook,tossing occasionally, until golden, 8 to 10 minutes; transfer to a plate.

Heat remaining tablespoon oil in same skillet over medium-high heat. Add bell peppers, cabbage, garlic, pepper flakes, and 1/2 teaspoon salt;toss to coat. Cover; cook, tossing occasionally, until vegetables are crisp-tender, 8 to 10 minutes.

Meanwhile, make sauce: In a small bowl (or liquid measuring cup), stir together peanut butter and 1/4 cup hot water until smooth; stir in soy sauce and vinegar.

Add tofu, leftover spaghetti, and sauce to skillet; simmer until heated through and saucy, 1 to 2 minutes.