Fresh and Juicy Veggie Burgers

Name: Fresh and Juicy Veggie Burgers
Ingredients: 1 head of garlic, halved horizontally; 2 tablespoons extra-virgin olive oil, plus more for drizzling and brushing; 1/4 cup thinly sliced asparagus; 1/3 cup fregola; One 15-ounce can chickpeas, drained; 1/4 cup chopped marinated artichokes; 2 tablespoons chopped pitted Gaeta olives; 2 tablespoons chopped scallions; 2 tablespoons full-fat plain Greek yogurt; 1 tablespoon fresh lemon juice; 1 teaspoon chopped basil; 1 teaspoon chopped mint; 1 teaspoon chopped parsley; 2 1/4 cups cooked red or white quinoa; Salt; Freshly ground pepper; 8 slices of scamorza cheese; 8 burger buns, toasted; Sun-dried-tomato spread, marinated mushrooms and sliced fresh tomatoes, for serving