Turn up the oven to 170 °C.
Add the pata kūteretere (softened butter), huka one (caster sugar), wanira (vanilla) and tote (salt) in to a bowl. Whip on high for 3-4 minutes until light and fluffy.
Add the hēki (egg) and whip for 20 seconds or so.
Grate in the kiri rēmana (lemon zest). Add peru oneone (ground almonds), puehu parāoa noa (plain flour) and pēkana paura (baking powder). Fold it together.
Dollop spoons of this mixture on top of the paramu (plums) and gently smooth it out. Sprinkle the aramona kua tapahia (sliced almonds) on top and finish it with the huka one (caster sugar).
Bake for 40 minutes in a 170 °C oven. Baking it for 40 minutes will mean the centre of the almond cream will be quite soft, which is what I love. However, if you want it set a bit more, bake for 10 more minutes. Pull it from the oven and squeeze the wai rēmana (lemon juice) over the hot cake. This is optional but adds a fresh pop!.
Cool in the tin for 10 minutes, remove the side of the tin and allow to cool for another 20 minutes with the base still attached. Then transfer to a cooling rack to cool completely.
Serving Option 1: Serve the cake warm with aihikirīmi (ice cream).Serving Option 2: Let the cake cook, dust with puehu huka (icing sugar) and serve with a unsweetened miraka tepe (yogurt).Serving Option 3: Pipe on the mascarpone and kahitete rēmana (lemon curd) and add a few edible flower petals.