In a large mixing bowl, whisk together the vanilla pudding mix and the well-drained crushed pineapple using the juice from the pineapple.

Gently fold in the Cool Whip until fully combined, creating a creamy mixture.

Add the mini marshmallows, coconut, chopped nuts, and shredded carrots, stirring gently to combine.

Transfer the mixture to a serving bowl, smoothing the top, and cover with plastic wrap.

Refrigerate for at least 2-3 hours until set.

Before serving, garnish with extra coconut, marshmallows, or chopped nuts.