Preheat your oven to 350°F (175°C). Line an 8x8-inch baking pan with parchment paper.
In a bowl, combine almond flour, whole wheat flour, ground flaxseed, cornstarch, and salt.
¾ cup almond flour, ½ cup whole wheat flour, ¼ cup flaxseed, 2 tbsp cornstarch, ¼ tsp salt
Add the egg white, melted butter, and vanilla extract. Mix until a cohesive dough forms.
1 egg white, 5 tbsp butter, ¾ tsp vanilla extract
Press the dough firmly and evenly into the bottom of the prepared pan.
Bake for 12-15 minutes, or until the crust is lightly golden. Let it cool while you prepare the filling.
In a large bowl, whisk together Greek yogurt, softened cream cheese, lemon juice, lemon zest, vanilla extract, and honey until smooth.
½ cup Greek yogurt, ⅓ cup cream cheese, ¼ cup lemon juice, 2 tbsp lemon zest, ½ tsp vanilla extract, 2 tsp honey
Add the egg, egg yolk, cornstarch, salt, and turmeric. Mix well until the filling is creamy and fully combined.
1 egg, 2 tsp cornstarch, 1 pinch salt, ⅛ tsp turmeric, 1 egg yolk
Pour the lemon filling over the pre-baked crust and bake for 20 minutes, or until the filling is set and no longer jiggly in the center.
Let the lemon bars cool completely in the pan, then refrigerate for at least 1 hour before slicing.
Use the parchment paper to lift them out of the pan for easier cutting.