Cool whip or he's y cream mixed w marshmallow fluff or icing or sugar or pudding or cake mix makes it thicker but too much and it won't splatter But if you gonna smear it around w hands or in pie tin may help ?
I've had great success using Cool Whip and adding sweetened condensed milk to your desired consistency. You'll end up with a gloopier pie the more sweetened condensed milk you add, but it still sticks great and has that shaving cream sheen that always looks great, too! Nothing like experimenting with different consistencies, excited to hear the results!!