Add the rice flour and matcha powder to a large bowl.

Stir or whisk well to combine.

Pour in a little water, about 1/4 cup, and continue to stir.

Add more water little by little until the flour is doughy. If you add too much water and it becomes runny, simply add more flour.

Sprinkle some rice flour onto your counter then transfer the dough onto it.

Knead the dough a bit then form it into a long thin shape.

Divide the dough into 8-12 parts, and form each into a ball. Set aside.

To fill your mochi place a ball of dough into your floured palm.

Flatten the dough, and place about 1 tbsp of red bean paste into the center.

Gently manipulate the dough around the red bean paste, and make sure it is entirely encased within the dough.

Flatten it out a bit (should be about 1/2 inch thick), and set aside.

Fill the remaining mochi dough.

Heat and grease a grill, grill pan, or skillet over medium heat.

Place the mochi onto the grill and cook each side for 4-5 minutes.

Place the cooked mochi on a plate, and continue with the remaining.

Serve hot!