Slice the Tofu lengthwise into 4 rectangular slabs, than half each piece to get squares.
Spread the sesame seeds on a plate. Press all surfaces of each tofu square into the seeds to coat.
Heat the sesame oil in a large skillet on medium heat.
Arrange the tofu in a single layer and cook about 5 minutes Carefully turn and cook 5 minutes on other side.
Add soy sauce and Tabasco, turn the squares over, and cook another minute. Transfer squares to a plate (leaving stray seeds in the pan).
Add the oil and garlic to the pan and sauté for about 30 seconds, until golden. Add the still damp rinsed spinach and cook for 1-2 more minutes, stirring constantly. Cook until wilted but still bright green.