Organic Pizza Sauce

I am planning on trying my hand at some organic pizza sauce for a few new recipes I found in the THM book. 

Here is the link to the recipe I am planning on trying out. 

http://www.myhumblekitchen.com/2013/01/how-to-make-your-own-homemade-organic-spaghetti-or-pizza-sauce-for-1-plus-change/

I find that many "store bought" pasta sauces have additives that several of my family members are often allergic to. 

If you have a favorite "organic" recipe or store brand recipe you use for pizza/pasta sauce I would love to hear about it.

Angela