INGREDIENTS
2 cups
all purpose gluten free flour (I used Better Batter)
1 tsp
xanthan gum (omit if your blend already contains it)
1/4 cup
+ 2 tablespoons (54 g) cornstarch (or try arrowroot)*
1/2 tsp
baking soda
2 tsp
baking powder
1/2 tsp
kosher salt
10 tbsp
unsalted butter, at room temperature
1 1/2 cups
granulated sugar
2 tsp
pure vanilla extract
4
egg whites (100 g) + 1 whole egg (50 g, weighed out of shell), at room temperature**
1 1/3 cups
(10 2/3 fluid ounces) buttermilk, at room temperature
*A note about flours: If you are using a higher starch all purpose gluten free flour blend like Cup4Cup (or my mock Cup4Cup), replace the cornstarch in this recipe with an additional 54 grams of your flour blend.
**To halve the recipe, use 3 egg whites (75 g) in place of the 4 egg whites and 1 whole egg.