Small box of Minute rice
medium container of heavy cream
small can of crushed pineapple
1 cup of sugar
splosh or so of vanilla
Cook the rice, per the package instructions. Put in a bowl. Drain the can of pineapple and add to the bowl. Add the cup of sugar. Stir together. Add the heavy cream. Stir again. Add the vanilla. Mixture will look soupy. Put in fridge and allow to "draw through" for a few hours. Overnight is best.
If my grandmother was feeling fancy, she'd garnish it with a cherry. I don't.