In large pan, bring pineapple ... and stir in jello. Cool to room temperature and stir in buttermilk. Fold in Cool Whip and pecans. Pour into 8-cup mold. Chill 4 hours or overnight.
Bring pineapple and sugar to ... in box of Jello. Set aside to cool. ... is cool, add buttermilk and pecans. Fold in Cool Whip. ... Very cool and fluffy!