In a bowl besan/gram flour, rice flour, salt, red chilli powder, sesame seeds and warm melted butter. Mix everything together.
Add water as needed and knead into a soft yet firm dough.
Meanwhile heat oil for deep frying. Take a ball of dough and set it in the murukku press with the ribbon plate. Greasing the murukku press with little oil will help in pressing the dough easily.
Once the oil is hot, set it on medium flame and press the dough into hot oil.
Fry until light golden brown and when the sizzling stops, remove onto a paper towel. Repeat the process with rest of the dough.
Store in an air tight container for upto a week or ten days.