Question

How do you get a signature cake in Sims 4?

Answer 1

in the sims 4 the signature cake can be baked at cooking level 6.
...
to assemble the cake:

1. place bottom cake layer on a serving tray. ...
2. add the top cake layer.
3. spread the peanut butter frosting all around the top and sides of the cake layers.
4. ladle the chocolate ganache over the top. ...
5. top with color sprinkles.
6. serve and eat!