I got this from Heavenly Homemaker, an awesome site, by the way, for frugal, healthy recipes. (Only she uses gluten... so most of her recipes don't work for me. Oh well...)
2/3 cup dried, minced onion
3 teaspoons parsley flakes
2 teaspoons onion powder (make your own by whizzing up dried onion flakes in the food processor or coffee grinder)
2 teaspoons turmeric
1 teaspoon celery salt (you want celery salt that is mostly salt with just a bit of celery seed- not pure celery seed ground up, or your soup mix will be bitter and not have enough saltiness to it)
1 teaspoon salt
1 teaspoon sucanat or sugar
1/2 teaspoon ground pepper
1. Mix it all up. Shake it very well, because the heavy spices will settle to the bottom.
4 tablespoons of this onion soup mix equals 1 packet of onion soup mix.