Add sliced steak and cornstarch into a gallon-sized freezer bag. Shake the bag until all sides of the steak pieces are coated. Seal the bag, removing air.
In a quart-sized freezer bag, combine tamari or soy sauce, brown sugar, garlic, ginger, sesame seeds, sesame oil, and red pepper flakes.
Label a new gallon-sized freezer bag. Add to the labeled bag the sealed steak with cornstarch bag and sealed sauce bag, and add broccoli florets on top. Seal bags together and freeze.
Cook:
In a large wok or skillet, add 3–4 tbsp vegetable or canola oil over high heat. Pour steak into wok, stir-fry, separate pieces, and stir constantly until the majority of the pieces have some golden or crispy edges on them, for about 3–4 minutes. Add broccoli, cook 1–2 minutes until crisp-tender. Add sauce, and cook, stirring constantly for about 1 minute until sauce slightly thickens.
Lettuce, tomatoes, garlic parmesan seasoning, red onion, deli ham, salami, banana peppers in jar, dill pickles, pepper jack cheese, red wine vinegar, mayonnaise, favorite sub buns