*IMPORTANT NOTE ON INSTANT DRY PUDDING MIX:
Many brands, including Jell-O and generic brands, have changed the ounces of mix in their small instant pudding boxes. If you can't find a 3.4 ounce box, buy a 3.9 ounce box and measure out 1/2 cup (loosely packed) to use in this recipe. If you pack it down, you will need 1/2 cup plus two teaspoons.