These gluten free lemon bars are a family favorite. Sweet with a bit of tartness, and a crust that has just the right texture. I credit the Gluten Free Bisquick Pancake Mix for that. The half cup of white rice flour gives the crust a bit more body, and the powdered sugar keeps it sweet.
For the crust:
1 cup Gluten Free Bisquick Pancake Mix
½ cup white rice flour
¼ cup powdered sugar
¼ teaspoon salt
6 tablespoons chilled gluten free butter spread
4 teaspoons to ¼ cup cold water
For the topping:
¼ teaspoon cream of tartar
1 cup sugar
1 tablespoon white rice flour
¼ teaspoon baking powder
¼ cup fresh lemon juice
Zest of one large lemon
Preheat oven to 350 degrees
Spray an 8x8 baking pan with cooking spray and line with parchment paper
Make the Crust
Whisk together the gluten free flour mix, white rice flour, powdered sugar and salt.
Cut the chilled butter into chunks and add it to the mix.
Use a fork or pastry blender to cut the butter into the flour mix.
When the flour mix is crumbly, use your fingers to break it down until it has a sandy feel to it.
Add two teaspoons of cold water and work it in with your fingers.
Continue adding one teaspoon of water at a time until the mixture feels sticky.
Add ½ teaspoon of water at time until the mixture holds together.
Transfer the mixture into the prepared pan and press it across the pan, making it as even as possible.
Place the pan in the oven and bake the crust for 20 minutes.
Make the topping
Five minutes before the crust is done baking, make the lemon topping.
In a bowl of a stand mixer, beat together the eggs and cream of tartar until light and fluffy.
Add the sugar, white rice flour and baking powder, the lemon juice and zest to the egg mixture and beat on medium speed until well blended and slightly thickened.
Take the crust out of the oven and pour the lemon mixture over the hot crust.
Put the pan back into the oven and bake for 25 to 30 minutes. Allow to cool in the pan for at least one hour before cutting.
Sprinkle powdered sugar on top if desired. I don't usually do this, because I find the bars to be sweet enough, but a little extra sweetness is always an option.