Given the task definition and input, reply with output. In this task, you will be presented with the directions of a recipe separated by "," and have to fill in the "___" which is a step that is missing from the recipe.

Preheat a waffle iron according to manufacturer's instructions.,______,Combine flour and baking powder in a bowl. Beat into butter mixture 1/2 cup at a time, alternating with cream. Add a dash of sparkling water in the end to loosen up the batter.,Spray the preheated waffle iron with cooking spray. Pour batter into waffle iron, working in batches, and cook according to manufacturer's instructions, 3 to 5 minutes per waffle.

Combine butter, sugar, vanilla sugar, and salt in a large bowl; beat with an electric mixer until smooth and creamy. Add eggs one at a time, beating well after each addition.