Heat a large skillet over medium high heat and sauté onions in vegetable oil, stirring occasionally, until caramelized and most of liquid has evaporated, about 15 minutes. Add halved garlic cloves and saute for 3 minutes more. Stir in spices and seasoning (paprika, salt, garlic and onion powders, black pepper, cayenne, oregano and thyme) and cook for 2 minutes. Set aside.