Prep your oven and waffle iron. Preheat the oven to 250°F. Preheat a waffle iron according to the manufacturers' instructions and lightly coat each waffle plate with cooking spray.
Uncover the dough and discard the plastic wrap. Use a rubber spatula to mix in the pearl sugar.
Cook the waffles. Divide the dough and cook the waffles according to the manufacturer's instructions until crisp and golden brown, coating the waffle plates with cooking spray between batches as needed.
Serve and store. Serve immediately, or place the finished waffles directly on the oven rack to keep them warm and crisp until ready to serve.