Cookies , Latte & Hot Chocolate , Recipes , Rooibos Oatmeal Cookies Preheat oven to 375°. Lightly butter baking sheets or line with parchment paper. Whisk Rooibos Chai Latte mix into the milk. Stir chopped fruit and flax seed into the milk and let sit. Combine oats, flour, baking powder & salt in a small bowl.