Cheesy Kale Quesadillas

Ingredients

• Freshly ground black pepper
• Salt
• 1 garlic clove (, peeled)
• 3 kale leaves (, stemmed and roughly chopped (about 2 cups))
• ½ apple (, peeled, cored, chopped)
• 1 ½ cups mozzarella or sharp white Cheddar cheese (, divided)
• 1 tablespoon extra-virgin olive oil (, plus 1 teaspoon)
• 4 large tortillas ((white, whole-wheat, or gluten-free))