In large bowl, toss wings with 1/2 cup oil; spread on sheet pans in one layer. Bake in 425°F oven about 20 minutes; turn wings over and bake 20 minutes more or until browned and cooked through. While wings are cooking in saucepan, heat 1/2 cup vegetable oil over medium heat. Add onion and garlic; cook, stirring frequently, until golden brown. Stir in ketchup, sriracha sauce, vinegar, soy sauce and cumin; simmer about 5 minutes. When wings are cooked, spoon sauce over wings to coat.