Line a 12" round pizza tray with parchment paper and set aside. Have another sheet of parchment paper ready to place on top of your dough for rolling. This one doesn't need to be round.
In a medium sauce pan, add the stock and seasonings and bring to a low boil over medium/high heat. Once boiling, add the corn meal and whisk continuously until thick. This will happen quickly, about 20-30 seconds, so make sure you're ready.
Transfer the dough to the center of your round sheet of parchment paper and place the other sheet on top. You may want to work on a cutting board as the mixture will be hot. Use a rolling pin to evenly roll and stretch the dough to the edges of the sheet. Work quickly, as the dough will be harder to stretch as it cools. It doesn't need to be perfect. Slide it onto the pizza tray and set it aside.
Preheat the oven to 425 degrees F convection bake. Then prepare your toppings. For toppings like onion, peppers or mushrooms precook them to release their water and prevent your crust from getting soggy.
When the oven is hot, bake your polenta pizza crust for 20 minutes, then remove from the oven and use the parchment paper to very carefully flip the crust over. Discard the paper and return the crust to the oven for 10 more minutes.
Remove from the oven and add all your toppings. I like tomato sauce, shredded cheese and sautéed veggies. Switch the oven to broil and return the topped pizza to the oven for 1-2 minutes to brown your toppings and melt your cheese. Watch carefully to prevent burning! If using fresh basil, add this at the end as a garnish, do not cook it with the basil.
Notes
Use parchment paper on your pizza pan to assist in flipping the crust after the first bake time.Top your pizza with any toppings you'd like but make sure to precook your veggies to release the water and lighten the load, so that your crust won't get soggy.Nutritional information is for one fourth of the pizza crust and does not include optional toppings.