In a medium pot, bring 4 cups of water to a boil over high heat.
Once boiling, add the ramen noodles and cook according to the package instructions, usually about 3-4 minutes.
In a separate mixing bowl, combine the shredded cheese, milk, and butter. Mix well until smooth.
Once the ramen noodles are cooked, drain them using a colander and return them to the pot.
Reduce the heat to low, then add the cheese mixture to the pot with the drained noodles.
Stir constantly until the cheese is melted and the sauce is creamy, about 2-3 minutes.
Season with salt and pepper to taste.
If desired, top with chopped green onions or cooked proteins, then serve immediately.