Ok, so I was looking on this one website and it had a bunch of different ideas on it. This is originally called Crack Bread but when I tried it, I didn't really care for the recipe. But while I tried it, I added a different ingredient and took one out. But that process is a bit much to explain so I'll just give you a recipe that I know will work for pretty much any pizza lover.
1 French Loaf Bread
Pepperoni Slices (cut into 1/4's)
Various Pizza Toppings of your choice (optional)
Mozzarella Cheese, Sliced or Shredded (I think sliced will work better, but whichever is easier for you)
1/2 cup butter, melted.
Marinara (Spaghetti Sauce)
First, cut the bread diagonally in both directions without cutting all the way through the bread's bottom.
Second, add the cheese between the cuts.
Third, add Pepperoni and other toppings above the cheese, in between the cuts.
Fourth, drizzle the melted butter all over the bread. I used a spoon to scoop and drizzle.
Fifth, cover the bread entirely in foil and bake for 15 mins at 350dF. Uncover and bake for 10 minutes more.
Lastly, heat the marinara. You can either dip the pieces into the marinara or spread the sauce over the bread.