• Preheat oven with baking steel at 500°F for 1 hour prior to baking. Remove pizza dough from fridge (if refrigerated) and allow to come to room temperature at least 60-90 minutes prior to stretching.

Prep The Toppings

• Cook the sausage. Remove the sausage from its casing and cook in a medium skillet over medium heat, using a spatula to break it up into crumbles. Once browned and cooked throughout, remove to a paper towel to cool.
• Make the pizza sauce. Combine all of the ingredients in the bowl of a mini food processor and blitz on high speed until well combined.
• Chop the veggies. Remove the seeds and ribs from the pepper and cut it up as large or small as you like. Wash and dry the mushrooms well and slice as small or large as you like. Drain the sliced black olives.

Supreme Pizza Assembly

• Lightly dust a wooden pizza peel with semolina flour.
• Hand stretch pizza dough. Stretch the pizza dough into a round about 10-16" in size, depending on how thick you want it or the size of your dough ball. (See: How to Hand Stretch Pizza Dough.)
• Sauce it. Use the back of a metal spoon to spread the pizza sauce almost all the way to the crust. You don't need as much sauce as you think — start with two spoonfuls, and add more only as needed.
• Cheese and toppings. Add the mozzarella cheese, top with pepperoni and crumbled sausage, then add peppers, olives, and mushrooms. Finish with a dusting of finely grated parmesan cheese.

Supreme Pizza Baking

• Shimmy. Give the supreme pizza a shimmy on the wooden pizza peel to make sure that no parts of the crust have stuck. Dust additional flour underneath any stuck spots if needed.
• Launch. Open the oven and line up the tip of the pizza peel with the back of the steel. Tilt it at an angle (20° or so) and give it a quick thrust to help the pizza begin sliding off. As the pizza slides, pull the peel straight back, keeping the tip of the peel on the steel, depositing the pizza on to the hot surface to begin cooking.
• Bake. Bake the pizza for 2-3 minutes, then use the pizza peel to rotate it in place on the steel so it cooks evenly. Bake 2-3 minutes more, then broil for 1 minute or until as browned as you like. Remove from the oven.
• Slice and serve!