"Bob’s yer Uncle" - Or do you mean the rock band founded in Chicago, Illinois established in 1995? Lol...
But I know what you meant:
'Bob's your uncle' is an exclamation that is used when 'everything is alright' and the simple means of obtaining the successful result is explained. For example, "left over right; right over left, and Bob's your uncle - a reef knot" or, "she slipped the officer £100 and, Bob's your uncle', she was off the charge"