Stretch out pizza dough onto a floured surface. Spread butternut squash puree evenly over crust. Spread caramelized onions evenly over pizza. Sprinkle with mozzarella. Top with pancetta and sprinkle gorgonzola evenly across top. Season with salt and pepper.
Bake 10-15 minutes, or until the crust is golden brown.
Meanwhile dress arugula with olive oil. salt and pepper.