01 -
Preheat oven to 160°C (fan-forced) or 180°C (conventional). Lightly grease a 27 x 19 x 7.5 cm baking dish with oil.
02 -
Place aquafaba in a stand mixer or large bowl. Whisk on high speed for 5–7 minutes until stiff peaks form. Set aside.
03 -
Combine pistachios and granulated sugar in a food processor. Blitz until finely ground.
04 -
Transfer pistachio-sugar mixture to a large mixing bowl. Sift in flour, cornstarch, baking powder, baking soda, and sea salt. Whisk gently to combine.
05 -
In a separate bowl, mix soy milk, apple cider vinegar, olive oil, and vanilla extract.
06 -
Pour wet ingredients into dry ingredients. Stir gently until almost combined, with a few streaks of flour remaining.
07 -
Carefully fold whipped aquafaba into batter, avoiding overmixing.
08 -
Pour batter into prepared baking dish. Bake for 35–45 minutes. Test with a skewer; if it comes out with batter, bake for an additional 5 minutes if needed.
09 -
Remove from oven and place baking dish on a wire rack to cool completely.
10 -
Once cooled, poke holes liberally across cake surface using a skewer.
11 -
In a large jug, combine pistachio butter, sweetened condensed coconut milk, evaporated coconut milk, and almond milk. Whisk until uniform.
12 -
Pour triple milk mixture evenly over cake. Refrigerate overnight to allow absorption.
13 -
Whip chilled coconut whipping cream with pistachio butter until fluffy.
14 -
Spread whipped pistachio cream over soaked cake. Sprinkle with chopped pistachios before serving.