Prep Time: 3 hours
Cook Time: 35 minutes
Total Time: 3 hours 35 minutes
This cheerful Grapefruit Layer Cake is sure to brighten your day! With moist grapefruit cake, a grapefruit curd filling, and grapefruit buttercream on the outside, it's wonderfully refreshing and such a nice change from the usual lemon or orange cakes. If you are using large, juicy grapefruit, you can probably get all the juice you need in this recipe from 2 fruits, but it's better to have 3 grapefruit available, just in case.
When I make lemon curd to use as a cake layer, I like to add a little gelatin to stabilize it and produce clean, neat cake slices that can hold their shape when cut, and withstand sitting at room temperature. If you don't have gelatin, or don't eat it for some reason, the gelatin + water step can be omitted from the curd, and you'll just have a slightly looser filling as a result.