In a small bowl, combine Oyster sauce, Fish sauce, light soy sauce, msg, and sugar. Mix to combine and sugar is dissolved and set aside.
Cook noodles 1 minute under package directions and drain well and set aside.
In a large pan over medium low heat, melt butter, then add minced garlic and sauté for 2 minutes until fragrant but not browned.
Turn the heat up to high, then add cooked noodles and sauce. Mix well until the noodles are combined with the butter, garlic, and sauce and continue cooking for another 1-2 minutes and the noodles are fragrant.
Turn the heat to low, then add parmesan cheese and freshly chopped scallions. Mix well to combine and serve immediately!
Notes
What Kind of Noodles Should I Use? I used fresh egg noodles from the Chinese grocery. You can use any long noodle (fresh or dried). I've seen this made with egg noodles, ramen noodles, and even dried spaghetti.Don't Use Pre-Grated Parmesan Cheese - Parmesan cheese is the "secret ingredient” for the best Garlic Noodles - it adds savory flavor and saltiness that transforms the dish. It's important you use high quality cheese that is NOT pre-grated. Pre-grated cheese has additives to keep the cheese from melting - this will prevent your parmesan cheese from melting into the sauce (it will taste grainy instead). Use a microplane to finely grate the Parmesan cheese for the best sauce.Don't Burn Your Garlic - You want to INFUSE the butter with all of the garlic flavor - do not brown or burn your garlic (otherwise your sauce will taste bitter). Cook your butter and garlic over medium low heat - do NOT use high heat for this step of the dish.Prep All Your Ingredients and Have Them Accessible - This dish comes together very quickly and some part are more sensitive than others (i.e.: infusing the garlic and preventing it from burning) - therefore, it's crucial you have all of your ingredients prepped and easily accessible before you begin cooking. I like to have them in individual bowls next to my stove.Storage - You can store leftover Garlic Noodles in an airtight container in the refrigerator for 3 days. I like to reheat the Garlic Noodles in a hot pan or wok with a couple tbsp of water to help loosen it up. The texture of the noodles will change as they sit in the refrigerator - but the flavors will taste even better!