Start by boiling and cooking the pasta. I like lo mein noodles for this dish, but really any noodles you have on hand will work. You could also use a whole wheat or gluten-free option if you prefer.
While the pasta cooks, mince the garlic. When you only have about 5 minutes of pasta cooking time left, melt the butter in a large sauce pan over medium heat. Add the garlic and cook for about 2 minutes. You want the garlic to brown but not burn. During the last minute of cooking, stir in the miso.