PREHEAT the oven at 180ºC, cover a tray with a nonstick paper. BROWN lilghtly the chickpeas on a hot frying pan, grind them hot in a food processor until you get flour. BEAT butter in a bowl until it becomes fluffy. Add sugar and continue beating. Incorporate eggs, one by one until it gets creamy. SIFT in another bowl the chickpea flour, corn flour and wheat flour with the baking powder. Incorporate this to butter. TAKE little portions and form balls of the same size. Place them on the tray, separated one of each other. Bake until they get lightly browned from corners, approximately for 15 minutes.