Bob’s your uncle
Definition 1 of 1
Pro Tip 1/3British Origin
It's a saying from Britain, so you will hear it mostly used by British people or in British media. 
After university, get a job at our firm, and Bob's your uncle, you'll be set for life.
Pro Tip 2/3Colloquial Use
It's informal, mainly used in spoken language or casual texts, not in formal writing or formal occasions. 
Plug it in, switch it on, and Bob's your uncle—you've got yourself a working lamp!
Pro Tip 3/3Easy Peasy
Use this phrase when you want to say something is very easy to do, with no trouble. 
Just follow the recipe, and Bob's your uncle, you'll have a delicious cake.