You may find you need a little bit more liquid than what the recipe calls for. The batter should be somewhat thick compared to a typical batter, but still pourable.
I use this
waffle iron. I cook each waffle for just about 5-6 minutes, each. Using this waffle iron, this recipe yields three VERY large Belgium waffle, using approximately 1 cup of batter for each waffle.
Make sure that your iron is preheated and very hot and that you cook the waffles long enough or they can turn out gummy.