Preheat oven to 425°; cut tofu into 1-inch cubes + set aside

Place 2 large pieces of foil on a sheet pan + oil the foil; divide tofu, onion/pep, cauliflower + salt/pep to the center of each piece of foil; add 5 tbsp sauce to each foil

Bring the long edges of foil together + roll to seal, leaving 1-inch of space above ingredients; repeat with side ends of foil, your pack is sealed!; bake 28-30 min

Meanwhile, wash scallions + slice crosswise into ¼-inch pieces; sprinkle on tofu right before you eat!