Preheat the oven to 350°F. Line an 8x8-inch baking pan with parchment paper.
In a bowl, mix almond flour, coconut flour, and salt. Stir in the melted butter and honey until a dough forms. Press the mixture evenly into the prepared pan.
Bake for 12–15 minutes, or until the edges are golden.
Spread the lemon curd evenly over the crust. Bake for 10 minutes to set the curd slightly.
Let the bars cool at room temperature, then chill in the fridge for at least 2 hours before slicing.
Press Firmly for the Best Crust: The crust will be slightly crumbly, but it should hold together well when pressed. Press the crust evenly and firmly into the pan to create a sturdy base.
Pre-Bake the Crust: Baking the crust before adding the lemon curd ensures it stays crisp and holds up under the filling. This step prevents a soggy bottom.
Homemade Lemon Curd Tip: If making homemade lemon curd, let it cool slightly before spreading it onto the crust. This helps prevent the crust from becoming soggy.
Chill for Best Results: These bars need at least 2 hours in the fridge before slicing. This helps the filling firm up and makes for cleaner cuts.
Serving Ideas: A light dusting of powdered sugar, a sprinkle of lemon zest, or even thinly sliced lemons on top make for a beautiful presentation.