To get the ultimate brownie, perfectly moist with a delicious crinkly top, you need to make sure you use this one technique ...

We may receive a commission on purchases made from links. Brownies are one of those desserts that feel almost sacred in their simplicity -- flour, butter, sugar, chocolate, and, of course, eggs.

Brownies, cut into neat rectangles, that have crinkly tops, sit on a black stone countertop - Adriana Samanez / 500px/Getty Images ...