Butternut Squash Prosciutto Pizza

Ingredients

• 1/2 pound pizza dough, at room temperature
• 2 tbsps extra-virgin olive oil
• 2 cups cubed butternut squash or pumpkin
• 2 tsp honey
• 2 tbsp chopped fresh sage
• 1/2 tsp cinnamon
• 1/2 tsp cayenne pepper or to your taste
• 2 pinches crushed red pepper flakes
• Kosher salt
• black pepper
• 2 tbsp unsalted butter
• 2 yellow onions, thinly sliced
• 3/4 cup apple cider
• 3/4 cup shredded whole milk mozzarella
• 3/4 cup shredded fontina cheese
• 1/4 cup crumbled blue cheese (optional)
• 2 ounces thinly sliced prosciutto, torn