– Next, make the tofu. Heat the remaining 2 tablespoons of sesame oil in a large cast-iron skillet. Cut tofu in 1" X ½" rectangles. Once the oil is hot, add tofu and sauté for 7 minutes, flipping once, until tofu is crispy and brown on both sides. Make sure your skillet is large enough so that you can cook the tofu in a single layer