The tofu can be served on the avocado toast either warm or cold. I like to warm it in the air fryer
by putting the whole slabs in the air fryer and cooking at 400 degrees for 5 minutes, stopping once to flip. If you don't have an air fryer, you could heat the tofu in a skillet for a few minutes on each side. After it is warm, remove the tofu from air fryer or skillet, and cut the tofu in thin slices.