I want to make gluten free muffins for my dad who is gluten intolerant..?

Question by Jane A: I want to make gluten free muffins for my dad who is gluten intolerant..?
And those are his favorite muffin...I have a gluten free baking mix ...these are the ingredients in that
*Brown Rice Flour, White Rice Flour, Cultured Buttermilk, Natural Almond Meal, Tapioca Starch, Sweet Rice Flour, Potato Starch, Grainless & Aluminum Free Baking Powder (Sodium Bicarbonate, Sodium Acid Pyrophosphate, Potato Starch), Baking Soda, Sea Salt, Xanthan Gum*

and here is the recipe for

Rice Cereal for Infants