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I had asked for recipes for the cheezy hashbrown caserole specifically a substitution for cream of chicken soup.
Most people made chicken broth and thickened it with cornstarch and said that worked well.
Others said they just substituted a block of cream chese or additional sour cream for the cream of chicken soup. 

Others used either lipton or campbells cup of soup packets. I do not know for sure that these are g.f. they were just reccomdended. 
Good luck!

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