no muss, no fuss
From Longman Dictionary of Contemporary Englishno muss, no fussno fuss no mussno muss, no fussused to say that something can be done easily and without problems – used humorously It works every time, no muss, no fuss. → mussExamples from the Corpusno muss, no fuss• It would be nice if income tax could be figured out in half an hour - no muss, no fuss.