Place a pizza stone in oven and preheat oven to 475 degrees.
Shape pizza dough into a 12-inch round over a lightly floured surface, leaving a larger rim around edge of dough for crust. Brush top with remaining 1 Tbsp olive oil and let rest 10 minutes.
Spread white sauce evenly over pizza, leaving crust uncoated. Top with half of the mozzarella and half of the parmesan, then add spinach, bacon and onions. Top with remaining half of the mozzarella and parmesan. Using a pizza peel, transfer pizza to preheated pizza stone and bake in preheated oven 8 - 12 minutes until cheese is melted and crust is golden.
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