3. Don't Overbake
This is the most important rule. The center should still have a slight jiggle when you pull them from the oven. They'll continue cooking as they cool.
4. Cool Completely Before Slicing
I know it's hard. But warm bars are a delicious mess. Cold bars are clean, beautiful squares. Patience rewards.
5. Room Temperature Eggs
Cold eggs can seize the melted butter. Let them sit out for 30 minutes before starting.
6. Customize Freely
This recipe is endlessly adaptable. See variations below.
