01 - Bring a saucepan of water to a gentle boil. Carefully lower in 6 eggs and simmer for 7 minutes. Immediately transfer eggs to an ice bath. Once cooled, peel the eggs.
02 - Combine soy sauce, mirin, water, and sugar in a bowl, stirring until sugar dissolves. Add peeled eggs to marinade, cover, and refrigerate for 1 hour or overnight for intensified flavor.
03 - Preheat oven to 350°F (175°C). Grease or line a 6-cup muffin tin.
04 - In a large mixing bowl, whisk together flour, baking powder, baking soda, and salt.
05 - In a separate bowl, whisk together whole milk, eggs, melted butter, and toasted sesame oil until cohesive.
06 - Pour wet mixture into dry ingredients and stir gently until just combined. Fold in scallions, nori, and cheese if desired.
07 - Spoon batter to fill each muffin cup halfway. Drain marinated ramen eggs, pat dry, and gently nestle one egg in the center of each cup. Top with remaining batter, ensuring eggs are fully enclosed.
08 - Sprinkle toasted sesame seeds and additional sliced scallions over muffin tops if preferred.
09 - Bake for 22–25 minutes or until golden and a toothpick inserted into the muffin (avoiding the egg) emerges clean.
10 - Allow muffins to cool for 5 minutes in the tin, then transfer to a rack. Serve warm or at room temperature.