Place the pan over medium heat. Add oil, butter, and garlic; sauté until butter begins to bubble, about 1 minute. Add red pepper flakes, salt, and pepper; stir with a rubber spatula. Add half the ravioli and stir gently until well coated; immediately add balance of ravioli and repeat. Flip the ravioli gently as needed to prevent them from sticking. Cook ravioli until golden brown, about 5 minutes.