Here is a great link to homemade pasta sauce recipes! I think I may try some of these :). I found a few stewed & diced tomatoes and a tomato paste with the only ingredient being tomatoes (no sugar or salt!) and removing the salt from the recipe will make it "allowed". Nice!
http://www.eatingwell.com/recipes_menus/recipe_slideshows/healthy_homemade_pasta_sauces?slide=1#leaderboardad
http://www.eatingwell.com/recipes_menus/recipe_slideshows/healthy_homemade_pasta_sauces?slide=1#leaderboardad