1. In a mixing bowl, combine the ingredients for the marinade (soy sauce, olive oil, siracha, and lemon juice) and add the steak bites. Mix well and marinate for 15 to 20 minutes minimum, while preparing the other ingredients.
2. Heat the olive oil in a large skillet over high heat. Drain steak from the marinade. Keep the remaining marinade for later.
3. Place the steak in the skillet in a single layer. Do not overcrowd the skillet or meat will steam, so you may have to work in batches depending on the size of your skillet. Cook for 3-4 minutes, stirring occasionally until steak cubes are golden brown. Repeat with remaining meat if needed.
4. Add 2 tablespoons butter and garlic to the skillet; cook for 1-2 minutes, stirring to coat the meat in the sauce. Remove to a shallow plate and set aside.
5. In the same skillet, add 1 tablespoon butter, lemon juice, red pepper flakes, beef broth, and remaining marinade juices. Bring to a simmer and allow to reduce for 2-3 minutes, stirring regularly.
6. Add the spiralized zucchini noodles and toss for two to three minutes to cook it up. Stir in the fresh parsley then allow the cooking juices to reduce for one minute if the zucchini renders too much water. Push the zucchini noodles on the side, add the steak bites back to the pan and reheat for another minute. Serve immediately. Enjoy!
