Press the tofu: Place the tofu on a cutting board lined with paper towels. Place more paper towels on top of the tofu and weight it down with a few heavy cookbooks or a heavy skillet filled with a few cans of beans. Let sit for 20 minutes.
Zest the lemon and use half of it for the spread (reserve the rest for another use). Juice the entire lemon for the spread.
Place all of the ingredients in food processor and blend until smooth, thick, and creamy. Taste for seasonings, adding more salt as needed.
Lather the spread onto sliced bread and top as desired.