How do you earn gold bars?

Hello @Wonder, and welcome to the community! At this time in Candy Crush Friends Saga, it doesn’t look like it is possible to earn gold bars. However, worry not! King is always working on ways to make the games bigger and better! Perhaps a feature that will allow the user to win free gold bars will be added in the near future. However, you should be able to earn gold bars in the original CC Saga by collecting sugar drops, and in CC Soda by winning (taking the throne) in Bubblegum Hill! Just keep an eye out for the latest features and updates to make sure you don’t miss anything! Have a divine day🍭😁

How does that work

I am having the same problem with earning gold bars. If I figure it out I’ll post, if anyone else figures it out would please post to let me know as well? Thank you

Gold bar is not free in CCFS. The piggy bank is meant to be a way to get 30 gold bars at a discounted price. The stars earned are converted to gold bars in the piggy bank and can be purchased at a discounted price but they are not free. 
You do get free boosters and free lives from the various reward boxes. 
It is up to the players to decide if they want to purchase gold bars or not. You don't have to buy gold bars or boosters to advance the levels. There are many players who are playing the game for free without spending any money. 
As it was highlighted earlier, there are contests on the forum that are opportunities to earn free gold bars. Cheers!

It’s not fun to be subjected to all their advertising sponsors and yet be expected to pay for the gold bars that you earn!