In these balsamic butter tofu bites, tofu gets smothered in a tangy sauce made with balsamic vinegar and butter for a tantalizing twist. The sauce thickens as it cooks, turning into a syrupy glaze. Watch it closely as it simmers to prevent it from burning. Serve these bites alongside roasted veggies and a hunk of crusty whole-grain bread for sopping up every last bit of the sauce.