Mongolian Tofu
The best best best technique to prepare tofu to give it a meaty dense inner and crunch exterior is illustrated by Chez Jorge at this link.
He makes the most amazing and unique dishes that you definitely need to try.
The technique is to freeze and thaw (twice) medium/firm tofu then fry or bake the tofu. I personally always bake the tofu (after dousing it in cornstarch) and it turns out crispy and perfect for covering in whatever sauce you’d like.