Butternut Squash, Spinach and Goat Cheese Pizza

INGREDIENTS

• 1/2 teaspoon dried thyme
• 1 medium red onion, halved and thinly sliced
• 1 tablespoon plus 1 teaspoon olive oil, divided
• 2 tablespoons cornmeal
• 1 ball (16 ounces) store-bought whole-wheat pizza dough, at room temperature
• 1/4 cup all-purpose flour
• 2 cups cubed butternut squash (1/2-inch pieces)
• 4 ounces crumbled goat cheese
• 2 cups chopped fresh baby spinach
• 1/4 teaspoon freshly ground black pepper, divided
• 1/4 teaspoon salt, divided