Begin by cooking the noodles. In a pot of boiling salted water, cook the noodles according to package instructions until al dente. Drain and set aside.
While the noodles are cooking, season the steak strips with salt and pepper.
Heat a large skillet over medium-high heat. Once hot, melt 2 tablespoons of butter in the skillet.
Add the seasoned steak strips to the skillet and cook for about 3-4 minutes, stirring occasionally until browned and cooked to your preferred doneness. Remove the steak from the skillet and set aside.
In the same skillet, add the remaining 2 tablespoons of butter and minced garlic. Sauté for 1-2 minutes until fragrant, being careful not to burn the garlic.
Add the cooked noodles to the skillet and pour in the soy sauce. Toss everything together to combine, allowing the noodles to soak up the flavors of the garlic butter.
Return the steak to the skillet and mix with the noodles. Cook for an additional 2 minutes until everything is heated through. Taste and adjust seasoning with more salt, pepper, or red pepper flakes if desired.
Serve immediately, garnished with fresh parsley.