I got this recipe from Taste of Home years ago. I like having this on hand for use in casseroles.
2 cups dry milk powder
3/4 cup cornstarch
1/4 cup chicken bouillon granules
1 teaspoon onion powder
1/2 teaspoon thyme
1/2 teaspoon basil
Combine the above ingredients and mix well. Store in an air tight container.
1 can of condensed soup = 1/3 cup mix with 1 cup water (the original recipe called for more water but I thought it was to thin so I use 1 cup). Mix the water and mix together and heat up over medium heat, stirring constantly.