This is nothing like terry's so it may not be what you want but i will tell you it is YUMMY! I have adapted from a post I read here. I have made it both the orig. way and this way and we all like it this way ... if you make bring the recipe becuase you will be asked for it!

Green Jello Cake
from Sarah on 4-8

1 pkg. Pinapple cake mix (orig. recipe yellow)
1 pkg. watermelon jello (small but you can use large if brave! I did :) orig. recipe was lime
3/4 cup water or pinapple juice is even better
1/2 cup oil
4 eggs

glaze:
1/2 cup lemon juice
2 cups sifted powdered sugar (i didn't sift)
2 TBSP butter
1 TBsP water
combine cake mix and jello in a mixing bowl, add water, oil & eggs beat 3 min. with mixer
pour into a 9x13 greased pan It will be staying in the pan so use the best you have.
bake at 325 for 40-45 min.
mix glaze in sm pan on stove top
using wide fork pierce cake all over
pour on the glaze.
This is a VERY MOIST yummy tart sweet cake!