Cut tofu into 1/2 inch cubes. Arrange on a paper towel-lined plate or baking sheet; top with more paper towels. Lay another plate on top. Put a heavy pan or a cast iron skillet on top to weigh it down. This will remove excess liquid from the tofu and the tofu will better absorb the honey sesame sauce. Let stand for 10-15 minutes.
Combine cornstarch and tofu in ziplock bag, seal, and shake it up until tofu is well coated.
Heat 1 tbsp sesame oil in a large skillet over medium heat. Cook tofu until crisp, 2-3 minutes on each side. Remove from pan.