Cut the rice cakes into bite-sized pieces.
Blanch the rice cakes in boiling water.
Add cooking oil to a pan and grill the rice cakes until golden brown.
In a bowl, mix gochujang, ketchup, sugar, soy sauce, and oligosaccharide to make the sauce.
Evenly coat the grilled rice cakes with the sauce.
Sprinkle with sesame seeds to finish.