I got this recipe from my mother-in-law. Since she is now in a resthome I'm left with making it for the whole family. It's a very easy recipe.
1. 8 cups (packed) thin sliced tender squash(crook neck) do not peel squash
2 cups thin sliced onions
1/2 cup green (bell) peppers, sliced thin length wise
1 tablespoon table salt
Combine in pan and let set one hour
2. 1 1/3 cups sugar
1 1/2 cups white vinegar
1 tablespoon celery seed
1 tablespoon mustard seed
Mix and bring to a boil.Add to squash and cook 5 minutes. Put in clean jars and seal. Makes about 5 pints.