Ok, so it it's semi stir, but it has great results. I used Anson Mills organic polenta. I originally wanted a firm polenta for grilling, but ended up with a creamy polenta. Most polenta recipes I've made firmed up fast, this maintained it's creaminess. I followed the recipe, but I used tin foil instead of a paper bag and had good results, I would imagine parchment paper would work well too. All the dyes and chemicals in paper bags are off putting for me. 30 mins worked for me.