The recipe was supposed to make a dozen muffins but it made eight muffins and six muffin tops.
Here's a better perspective of the muffin top. It's about half as tall as a cupcake-sized muffin. I guess it would be the top of a jumbo muffin if it was an actual top of a muffin.
I'm not sold on the muffin top pan yet. The first tops I made stuck to the pan. These didn't stick, but they turned out darker than the muffins even though they were baked at the same time. Maybe a 400 degree oven is too hot for the pan. Also they don't taste like the top of a muffin. They taste like a muffin baked in a shallow muffin tin.