In a medium bowl, combine glutinous rice flour, warm water, and matcha until incorporated. When cool enough to handle, knead by hand for 5 minutes until the dough comes together.
Divide the dough into 6 parts and roll into balls. Sprinkle some glutinous rice flour over them so they do not stick together.
Place one ball in your palm. Press it round and flat. Scoop around 2 tablespoons of red bean paste into the center. Seal into a ball and press it gently with your palm until flat.
Cover rice cake with sesame seeds and press it gently so that the sesame seeds stick to the rice cake. Continue filling the remaining balls.
Heat a little bit of vegetable oil on a non-stick pan over low heat. When the oil is hot, place the rice cakes on the skillet. Cover with a lid and cook until the bottom turns golden brown. Flip and cook the other side. Set aside.