Melt the cheese base: In a pan over medium-low heat, add the American and Colby Jack cheese. Stir until melted and smooth.
Make the creamy sauce: Add the Buldak sauce packet, egg yolk, and mayonnaise. Mix until fully combined.
Cook the noodles: Pour in the water, then add the noodles, powder seasoning packet, and heavy cream. Cover with a lid and bring to a boil.
Thicken the sauce: Once boiling, remove the lid and stir well. Continue cooking until the noodles are tender and the sauce turns creamy and glossy.
Finish it off: Top with steak or shrimp, then add Parmesan cheese. Garnish with sesame seeds and parsley for the final touch
