Mix together 1 tablespoon of cornstarch and 1 tablespoon of water to form a slurry.
Simmer cherries, ¼ cup of water and 3 tablespoons of sugar in a pot until the cherries are softened.
Once softened and warm, add the slurry to the pot of cherries and bring to a slight boil. Simmer until thickened. Remove from heat.
Putting it all together
Gently fold the whipped cream into the rice pudding. Serve in bowls or cups, topped with the warm cherry sauce.
Notes
People will say IT IS VITALLY IMPORTANT YOU USE ARBORIO RICE. It isn't vitally important.People will say IT IS VITALLY IMPORTANT TO USE REGULAR, LONG GRAIN WHITE RICE. It isn't vitally important.In other words, use whichever you have and it'll be delicious.If you simmer your rice and milk mixture too long it'll get very stiff and solid after it has cooled. This is normal, just add a bit of milk to loosen it up if you want, but the whipping cream will do all the loosening you need really.This is all done to taste. If you like a sweeter rice pudding, add more sugar. Ditto for the cherry sauce.