Beat eggs and sugar. Add cooled melted butter and vanilla. Sift together the cocoa, flour and baking powder. Add to egg mixture. Batter will be stiff. Drop by teaspoonful onto pizzelle maker. Close lid and cook for about 20 seconds. After the first couple, you will know how long to cook them for your pizzelle maker. Makes 30 pizzelles.
The pizzelle maker I use is from Villaware.
Sometimes two cookies will be formed together. Just break them apart. Most cookies will need to be trimmed a little around the edges:
It's fun to make little waffle cups - just place the hot pizzelle right off the griddle onto an inverted custard cup. The ones below were formed on a rolling pin: