Hi Kristi,
Here are three versions from our archives:
Tunnel of Fudge Cake (using frosting mix)
Tunnel of Fudge Cake (without frosting mix)
Tunnel of Fudge Cake (without frosting mix - no nuts variation)
I hope they bring back fond memories of your grandmother.
Happy Baking!
Betsy
In reply to:
Hello all,
My Grandmother used to make this cake all the time before she passed away and I would really like to have a copy of the original one that still uses the frosting box mix. - Kristi, ILLINOIS