• Before getting started, preheat your oven to 350ºF. Then line an 8x8 baking pan with parchment paper.

Assemble the Crust

• Start by adding the flour, salt, baking powder and sugar to a medium mixing bowl and whisk together.
• Add both the melted butter and the egg yolks, whisking everything together 'til well combined.
• Press your crust into the 8x8 pan that you prepared in the first step, and then bake it at 350ºF for about 12-15 minutes, or until light golden brown in color. Set aside to cool while you make your filling.

Make the Lemon Meringue Pie Bars Filling

• Next, add the sweetened condensed milk, lemon zest and lemon juice to a small mixing bowl, mixing everything together until well combined.
• Once it has somewhat cooled, go ahead and use a rubber scraper spatula to spread the lemon filling over your crust.

How to Make Lemon Bars With Meringue Topping

• Add the egg whites and lemon juice to a medium bowl and beat with the electric hand mixer set on high until foaming.
• Slowly add the sugar, continuing to beat the egg whites until medium peaks form. At this point, you want your peaks to be soft, but not stiff.
• Once medium peaks have formed, spread the meringue topping over your lemon filling in the baking pan.
• Bake your lemon meringue pie bars at 350ºF for about 12-15 minutes, or 'til the meringue turns golden brown on top.
• Once completely cooled, cut your lemon meringue pie bars, serve and enjoy!