Sauté garlic and scallions in oil for 30 seconds or so.
Add in your veggies and tofu and stir fry for a minute or two.
Boil rice cakes for 3 minutes (or according to package instructions).
Add in your boiled rice cake and all sauces: soy, rice vinegar, sriracha, brown sugar, and veggie broth.
Sauté everything together well until the rice cakes absorb all of the sauce.