Preheat your oven to 450 degrees F. If using a pizza stone, place it in the oven now so it heats up fully before the dough goes in.

Heat a frying pan over medium heat. Add 1 tablespoon of olive oil, then add the chopped onions. Stir occasionally and cook for 10 to 15 minutes until deep golden brown and caramelized. Do not rush on high heat.

Lay a sheet of parchment paper on a flat surface and dust lightly with flour. Roll out pizza dough into a 13 to 14 inch circle and use your fingers to build up the edges slightly for a crust border.

Drizzle 1 tablespoon of olive oil over the entire surface of the dough. Use a brush or fingers to spread it to the edges, especially the crust border.

Slide the parchment with the dough into the oven and par-bake for exactly 1 minute at 450 degrees F. Remove from oven immediately.

Spread mustard and BBQ sauce evenly over the crust using the back of a spoon. Layer on American cheese slices, then chopped hot dogs, caramelized onions, and sprinkle mozzarella over the top. Add sauerkraut now if using.

Return the pizza to the oven and bake for 10 to 12 minutes until the cheese is bubbly with golden brown spots and the crust edges are deep golden. Rest for 2 minutes before slicing.