There is jelly under the cake bombs as well as the cream blockers, so everything has to be cleared.
The only way to clear the cakes is with stripes and stripe/wrap combos.
There is a UFO locked in the bottom but it will not clear much of the cakes as the wrapped candies can only reach half of the cakes, which you can clear yourself quite easily.
Colour bomb switched with a stripe may help, but I find the stripes usually go everywhere except where you need them, so the surest way to clear the cakes is stripe/wrap combos.
Once the cakes are gone it's a fairly easy clearance of the jelly.
At the start of level 1159 the moves are very restricted so you will just have to make the best moves you can.
Once you clear the blockers at the top the candies will fall down into the middle so you can make matches on the conveyor to clear the jelly there, but you must also check the whole board before every move to make sure you don't miss any chances to make stripes or wraps.
It isn't possible to make colour bombs so you will have to rely on stripes and wraps and combinations of the two.
If you are struggling with level 1159 you could try using a fish booster, or even a colour bomb booster, but that will have very limited value on such a restricted board.
The good thing about level 11259 Candy Crush Saga is that there are only four colours on the board so making special candies is fairly easy once the board is a bit more open.
