
We like this simple recipe by Giada deLaurentiis. It is straightforward, but it takes 6 hours to set.
http://www.foodnetwork.com/recipes/giada-de-laurentiis/panna-cotta-with-fresh-berries-recipe.html (Mar. 2016)
Note: The recipe calls for 1 Tbsp unflavored gelatin, which is approx. 1 ½ packets of Knox unflavored gelatin. I round up to 2 packets.