Making your own homemade onion soup mix is pretty easy. I like u003cstrongu003eu003ca href=u0022https://www.food.com/recipe/substitute-for-1-envelope-onion-soup-mix-186221u0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003ethis recipe from Food.comu003c/au003eu003c/strongu003e because 1 recipe is the equivalent of one packet of store-bought onion soup mix.