Step 1 Combine beef slices, maple syrup, soy sauce and ginger in a medium bowl; set aside.
Step 2 Meanwhile, cook udon noodles according to packet instructions.
Step 3 Spray a wok or large, deep frying pan with olive oil; set over high heat. Add beef to wok and stir-fry, in batches, for 2 minutes, or until browned all over and done to your liking; set aside.
Step 4 Add vegetable mix to wok; stir-fry for 5 minutes, or until tender. Add reserved beef, cooked noodles, oyster sauce and sliced shallots to wok with 1 tablespoon water; toss.
Step 5 Divide stir-fry among serving plates, sprinkle with sesame seeds and serve.