Gluten Free Thin Mint Cookie – Rise Above Gluten

Ingredients

• 1/2 cup butter, room temperature
• 1 cup white sugar
• 1/3 cup milk (any kind)
• 1/2 tsp vanilla
• 1/8 tsp of peppermint oil (I read that oil is better than extract for this cookie)
• 2 1/4 cups gluten free flour
• 1/4 cup cornstarch
• 6 tbsp unsweetened cocoa powder
• 1/2 tsp salt
• 1 tsp xanthan gum