Self-rising flour contains baking powder. If you don’t have gluten-free self rising flour at home, it’s easy to make! All you have to do is combine 2 cups of 1:1 gluten-free flour (it must have a binder like xanthum gum in it!) with 3 teaspoons of baking powder and ½ teaspoon of salt. Mix everything well and you are ready to go!