Preheat the oven to 350 degrees F (180 degrees C), then get out a sheet tray and line it with a silicone mat or aluminum foil. Take the French French Bread (1) and cut it in half, then cut each half in half lengthwise to get 4 equal crusts.
Set them on the sheet tray and set it aside. Get a large skillet on the stove and heat the Olive Oil (1 dash) in it over medium-high heat. Brown the Ground Sweet Italian Sausage (1 pound) in it while you break it up.
Add in the Onion (1) and Roasted Red Peppers (1 jar) when the sausage is almost done and let them soften for a couple of minutes. While that all cooks, season the mixture with the Garlic Powder (1 teaspoon) , Dried Parsley (1 teaspoon), Salt (1 pinch) and Crushed Red Pepper Flakes (1 pinch).
At this point there will be a lot of liquid in the pan. Add in the Corn Starch (1 teaspoon) to thicken the whole filling and absorb some of the liquid. Let the remaining liquid cook off for about another 4 minutes, then take the pan off of the heat.
Then it's time to assemble the pizzas. Spread 1/2 cup of the Marinara Sauce (2 cup) on each piece of French bread, followed by 1/4 of the Shredded Mozzarella Cheese (4 ounce).
Evenly distribute the sausage mixture on top of the mozzarella on each crust. Finish it off by sprinkling a tablespoon of Asiago Cheese (1/4 cup) on top of each pizza. Bake them for about 20 minutes, until bubbly. Serve them immediately and enjoy!