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Au gratin potato mix

Course Main Course
Cuisine American
Keyword cheddar sauce mix, dry mix in a jar, homemade au gratin mix, potato casserole mix
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes
A creamy cheddar and onion dry mix you whisk together once and keep in a jar. Stir a little into boiling water for a quick au gratin potato bake.

Ingredients

Dry mix

  • 1 cup flour
  • 1 cup cornstarch
  • 1½ cups cheddar cheese powder
  • 2 cups dry milk powder
  • ¼ cup dried onion flakes
  • 1 tbsp onion powder
  • 1 tbsp garlic powder
  • 2 tsp salt
  • 2 tbsp powdered chicken bouillon
  • 4 tsp mustard powder
  • 1 tsp sweet paprika
  • 1–2 tsp ground black pepper

Directions

  • Whisk the dry ingredients together and keep in a jar.

Notes

Baked: whisk ½ cup mix with 2¾ cups boiling water and 2 tbsp butter in a 9×13 dish. Press in 3 cups potato slices. Cover and bake at 350°F for 30 minutes, then uncover 15 more minutes. Rest 5 minutes.
Storage: airtight jar up to 6 months.
Safety: cheese powder shortens shelf life.