Photo gallery: The gluten-free pantry Discover which baking staples to keep in your cupboard -- and make freshly baked gluten-free breads, cookies and other treats more often. By The Canadian Living Test Kitchen Slide: 1 of 7 auto-play pause next first speed Gluten-free baking ingredients Many gluten-free recipes (such as these Gluten-Free Fruity Oat Muffins) require a few ingredients you might not be familiar with. Here's what you need to know about them, plus a couple more you may want to have on hand for gluten-free baking. Xanthan gum: A white, powdery starch made from corn or cabbage, xanthan gum is added to gluten-free flour to give structure to baked goods, especially pastries and breads. Look for it near gluten-free flours.