Follow the directions for cooking our best basic pizza dough (or use a store-bought dough if necessary).
In a large saute pan over medium heat add the oil. Then add the sliced red onions and cook until they start to caramelize.
Spread the already-made sauce over the pre- made (not baked) dough.
Next top the sauce with the slices of ham, then the caramelized onions, then half of the gruyere. Sprinkle the sliced banana peppers over top evenly. Then top with the remaining cheese. Bake according to the pizza dough recipe.