In a measuring cup whisk 1 teaspoon of sriracha with your buttermilk. Pour your buttermilk over your shrimp and let it sit for 15 minutes.
3/4 cup buttermilk, 1 pound raw large shrimp
Combine your cornstarch, salt, pepper and garlic powder in a gallon size Ziploc bag.
1 cup cornstarch, 1/4 teaspoon salt, 1/4 teaspoon black pepper, 1/4 teaspoon garlic powder
In a bowl combine the mayonnaise, sweet Thai chili sauce and the remaining sriracha.
3/4 cup mayonnaise, 1/4 cup sweet Thai chili sauce
Using a slotted spoon to scoop the shrimp out of the buttermilk. Place the shrimp into the bag and shake the shrimp until they are all coated in the cornstarch.
Preheat your air fryer to 370 degrees. Spray your air fryer with nonstick cooking spray.
Place a single layer of shrimp into the air fryer, shake the basket to get any excess cornstarch off. Spray the tops of your shrimp with cooking spray to help crisp them up.
Bake for 10 minutes, flipping them halfway through and spraying the top again to continue to help crisp them.
Once they are cooked, place them into a large bowl and pour half of your bang bang sauce over them. Gently stir to coat the shrimp, adding more sauce as needed.
Plate and garnish with green onions, if desired.