Make three cakes using heart-shaped tins of different sizes.
Once the cakes have cooled, stack them and cover with butter-cream icing. Decorate the edge of each tier with edible heart-shaped sprinkles.
Red-velvet cake with vanilla butter-cream icing, £350 (serves 100), Pat-A-Cake Pat-A-Cake. Tins: 6in, £16.41; 8in, £18.41; 10in, £20.04, Invicta Bakeware. Heart sprinkles, from £2.89 for 50g, Cake Decorating Store