You could also use a grapefruit spoon, like this one on Amazon, for deeper lines. Flour the spoon a bit to ensure that it ...

Here is another great recipe that not only tastes good, but looks amazing! These tulip tomatoes will be so much fun ...

Pour it into the lined tin on top of the grapefruit slices and smooth out flat with the back of a wooden spoon. Bake for 1 hour until golden-brown and a skewer inserted in the middle comes out clean.

Then spread on half of the remaining mascarpone cream onto the cake. Spoon over a generous amount of the grapefruit curd – some curd may spill over the edges but don’t worry about this.