Her search ended, as it usually does, with America's Test Kitchen. This time, with its Best Key Lime Bars recipe (link leads to premium content). Bonus: The recipe is simple, just a few steps, but we used regular limes instead of Key limes.
The crust is baked after being made of crushed animal cookies, a throwback to our childhoods. It also includes a bit of brown sugar, salt and butter.
For the filling, combine cream cheese, grated lime zest, salt, sweetened condensed milk, egg yolk and lime juice in a mixer. Then pour it over the crust and bake; refrigerate after baking for a couple of hours.
We loved these bars so much that Melissa made them 3 or 4 times. The tart lime was perfect and the animal cookie crust, a perfect blend of salt and sweet, cut through that tartness.