To make the topping: In a small bowl, combine 4 tablespoons olive oil and garlic. Set aside.
In a medium bowl, combine the butternut squash, Brussels sprouts, balsamic vinegar, 1/2 teaspoon salt, black pepper and 2 tablespoons of the garlic oil. Toss to coat and place on a large rimmed baking sheet. Roast on the middle rack for 30 minutes, stirring once, or until lightly browned and just tender.
To make the pizza: Divide the dough into 2 pieces. Working with 1 piece at a time, on a floured work surface, roll out to a 10- by 14-inch oblong or, if preferred, a 12-inch circle. Place on a pizza peel or a large rimless baking sheet. Brush the top with 1 tablespoon garlic oil. Sprinkle half of the Fontina or mozzarella onto the crust, leaving a 1-inch border. Top with half of the roasted vegetables and half of the bacon.
Carefully slide the pizza off the peel or baking sheet onto the hot pizza stone, tiles or baking sheet. Bake for 12 to 15 minutes or until the crust is browned and cheese is melted. Remove from the oven and cut into 8 pieces. Repeat with remaining dough and toppings. Serve hot with Parmesan cheese and more balsamic vinegar on the side.
Nutrition information per serving:
Calories480Fat20 gSodium1,080 mg