Combine all the ingredients in a bowl or jar with roasted sesame seeds, sumac, dried thyme, dried Greek oregano, cumin, coriander, and salt. Stir or shake the jar so that all the ingredients have been thoroughly combined.
Store in an airtight container (or zip lock bag) and use as needed. I include it when I am cooking Mediterranean recipes for added flavor. And it is great on pita chips.
Store in an airtight container.
Just a note on serving it with olive oil and bread: you can toast the mix in hot (not scorching) olive oil or butter to bring out the best of this incredible spice mix. Heat the oil, remove it from the heat and throw in your za'atar. Just that little bit of heat enhances the flavors.
The marvelous thing about this spice mix is that it's a one-spice-cooks-all. You can stop with the za'atar spice mix or throw in some garlic and ground cayenne to kick it up some more.
Please keep in mind that the nutritional information is a rough estimate and can vary significantly based on the products used in the recipe.