Preheat oven to 375 convection or 400 conventional.
Slice a loaf of French bread horizontally. I used a 9-inch baguette, but any length should be fine. A sub bun would work ok also. But the quality of the bread will determine your taste.
Prep toppings. I browned 1/2 pound of Italian sausage and cut some pepperoni in half.
Top with sauce. It took about 1/2 cup. Add toppings. Add mozzarella cheese.
Bake on middle rack until nicely browned. About 10 minutes.
If doing a larger amount, it is worth time doing your own sauce. My homemade sauce recipe: One 6 oz can of tomato paste and 6 oz water. 1 teaspoon salt, 1/2 teaspoon pepper, 1 clove garlic, and 1/2 teaspoon oregano. This will make about 1 1/2 cups of sauce which is three times what I use here for two 9 inch pizzas so you can judge from there.
Top as you wish.
Great for a pizza party for teens. They can prepare as they wish.
The results are very dependent on the quality of bread.