Once the pre-baked crust is ready, I pour the pecan filling right over the hot crust. It will sizzle slightly—that’s good! I spread it evenly with my spatula and scatter the reserved pecans on top. I return the pan to the oven and bake until the filling is set around the edges but still has a slight, gentle jiggle in the very center when I nudge the pan. This usually takes 25-30 minutes. Overbaking will make the filling rubbery.
Pro Tips for Best Results
The perfect bake is all about the jiggle. I tested this three different ways: until completely firm, until a knife came out clean, and until just-set with a wobbly center. The just-set method won by a mile. The bars continue to cook and set as they cool, resulting in a creamy, luscious texture. If you bake them until a knife comes out clean, they’ll be overdone and lack that dreamy custard quality.
For the cleanest cuts, you must let the bars cool completely—I mean completely—and then chill them. I let them cool in the pan on a rack for 2 hours, then use the parchment sling to lift them onto a cutting board. I cover them and refrigerate for at least 3 hours, or overnight. The chilling firms up the filling, making it possible to slice neat, beautiful squares without crumbling. It also intensifies all the flavors.
When browning the butter, use a light-colored saucepan so you can clearly see the color change. The moment you see amber-brown specks at the bottom and smell that nutty fragrance, take it off the heat. It goes from perfectly brown to burnt in seconds. Pouring it into a separate bowl immediately stops the cooking and saves your precious brown butter from turning bitter.
Common Mistakes to Avoid
Do not add the eggs to hot brown butter. I made this mistake the first time, and I ended up with little bits of scrambled egg in my filling. You must let the browned butter cool for at least 5 minutes so it’s warm but not hot to the touch. When you whisk in the eggs, they should incorporate smoothly without curdling.(See the next page below to continue…)