I've had the muffin top baking sheet for a while, but this was the first time I'd actually made muffin tops with it. (bakingandboys.com)
Spray muffins tins (or muffin top baking sheet) with cooking spray. (bakingandboys.com)
The top baking sheet adds enough weight for your dough to remain under control and yet allows for the layers to puff up during baking. (tarteletteblog.com)