Bring a pot of water to a boil, then add the ramen noodles and cook while stirring gently until they soften and separate properly.
Drain the noodles and rinse briefly with cold water to stop the cooking process, then drain thoroughly and set aside.
Heat a large skillet over medium heat and melt the butter, then add the minced garlic and cook briefly until fragrant.
Stir in the soy sauce, brown sugar, and red pepper flakes, cooking until the mixture becomes smooth and slightly bubbly.
Add the cooked noodles to the skillet and toss gently so they are evenly coated in the sauce.
Push the noodles to one side of the pan, leaving space for the egg.
Crack the egg into the empty space and scramble it gently until just cooked through.
Mix the scrambled egg into the noodles, combining everything evenly.
Transfer the noodles to serving plates and top with sliced scallions and optional seasoning.
Serve immediately while warm for the best taste and texture.