Baked Asiago and Caramelized Onion Hummus Dip

INGREDIENTS

• 1 tablespoon unsalted butter
• 1 onion, thinly sliced
• ½ teaspoon granulated sugar
• 1 (15-ounce) can garbanzo beans, drained and rinsed
• 1 tablespoon olive oil
• 1 tablespoon sesame oil
• 1 clove garlic
• ½ teaspoon minced fresh rosemary
• 2 tablespoons water
• ½ teaspoon salt
• ¼ teaspoon ground black pepper
• 6 tablespoons shredded Asiago cheese, divided