In a bag add the minced garlic, ginger, dressing or marinade, apple juice, soy sauce, red pepper flakes, and pepper. Then place the flank steak in the bag. Marinade overnight or at least for 1 hour prior to dinner.
When it is dinner time, grab a skillet and cook the steak. Throw away the marinade. Cook the steaks for only a few minutes on each side and then remove and place on a plate.
Then throw the veggies in and cook in the leftover steak juices. Cook veggies according the directions on back of package. Then add in the Udon noodles. Cook for a few minutes then toss the steak back in. Top with toasted sesame seeds and serve!