To write this, first think of a recipe you love to make. If you don't like to cook anything, think of something you like to eat. Make sure the recipe is fairly simple, so your composition will be short and easier to write.
Next, write out the recipe. Describe what ingredients you need to buy, as well as the process of how to make it. For example, if you were making chocolate chip cookies, you can say something like "you will need 1 cup of flour," and "bake in the oven at 350 degrees fahrenheit."
Make sure to use proper grammar and simpler language. A magazine wouldn't have complicated words and sentence structure. You want to make it as easy to read and follow as possible.