Preheat oven to 180°C and line a baking tray with parchment paper.
Mix flour, baking powder, baking soda, and sugar in a bowl.
Add coconut oil, milk, vinegar, and vanilla. Whisk until smooth.
Pour batter into tray and bake for 20–25 minutes. Cool completely.
In another bowl, whisk chilled coconut cream, maple syrup, and vanilla until fluffy.
Toss sliced strawberries in lemon juice and maple syrup for a glossy finish.
Cut cooled cake into cubes.
In a trifle dish, layer cake cubes, whipped cream, and strawberries.
Repeat until the dish is full — the taller, the better.
Chill for 1 hour before serving to let the flavors flirt.