Put cauliflower in food processor. Pulse until you get a rice consistency.
Drizzle olive oil into a pan. Heat on the stove on medium heat. Add riced cauliflower and salt and pepper. Cook until tender, about 5 minutes. Set aside.
Teriyaki Sauce
In a small bowl combine tamari, mirin, and brown sugar.
Heat in the microwave until sugar dissolves. Add the white and light green parts of green onion and garlic. Set aside.
In a separate bowl, add tapioca flour and water. Whisk to dissolve. Set aside.
Tofu
Slice drained and pressed tofu into cubes or triangles. Dredge in tapioca flour. Heat enough vegetable oil in a pan to cover pan. Add tofu. Cook on both sides until crispy and browned.
Add the teriyaki sauce and the tapioca mixture to the pan. Stir to combine. Simmer until the sauce thickens, about 2 minutes.
Serve over crispy tofu and cauliflower rice. Top with dark green parts of green onion.
Notes
This recipe will last about 5 days in an airtight container in the fridge.If you use corn starch instead of tapioca flour for the sauce, you'll need half as much.