whisk your egg whites using a hand mixer or stand mixer, forming stiff peaks.
drizzle in the honey and vanilla extract, as you mix the egg whites, and continue mixing until stiff peaks form.
once the stiff peaks have formed, stop blending and remove from the stand mixer and set aside.
the meringue can be piled on as high you’d like on top of the cooled down bars. Use a spatula and spread it evenly across them.
for a golden brown meringue, place the bars under the broiler on low for 2-4 minutes max. be very careful if you’re using the broiler so as not to burn the meringue, which can happen in an instant!! (to the best of us!!)
allow to cool again, storing in fridge for a few hours before you carefully remove the the key lime pie bars from the dish. Take it out using the edges of the parchment paper, just make sure it's loosened up around the edges with a knife. Place it on a cutting board, and you can slice it up into little bars, as you see fit.
these bars are best served fresh/immediately! they will keep in the fridge for a few days, however I do not recommend freezing because of the meringue. these are most enjoyable when served fresh.