Tuna and Avocado Wontons with Sriracha Aioli

Name: Tuna and Avocado Wontons with Sriracha Aioli
Ingredients: 12 square wonton wrappers; vegetable spray; ¼ cup good quality mayonnaise; 1 tablespoon Sriracha; 2 avocados, pitted; 1 Serrano or jalapeño, seeded, deveined, and minced; ⅓ cup red onion, finely chopped; 2 tablespoons fresh lime juice; ½ - ¾ teaspoon Kosher salt; pinch of freshly ground black pepper; 7 ounces sushi-grade tuna; 1 tablespoon black sesame seeds (white is ok too); 2 scallions, green parts only, thinly sliced