In a small sauce pan, dissolve Jell-0 powder in boiling water; add pineapple and marshmallows. Simmer until all marshmallows are dissolved.
Remove from heat and chill until slightly thick.
Whip with mixer until foamy; fold in cottage cheese and un-whipped cream.
Line Jell-0 mold with plastic wrap sprinkle nuts on bottom.
Pour salad into mold and cover with plastic wrap.
Allow to set before serving
Un-mold onto serving plate.