Why impossible?
Because, it transforms from a lumpy liquid to a three-layered delight in just under an hour.
Please note, I view any additions, including the scandalous suggestion of topping with flaked almonds, as besmirching the purity of the dish. I’ve said my piece and we’ll move on now.
Preheat the oven to 180°C/350°F. Grease a deep 24cm (9½in) pie dish.
Combine sifted flour, sugar, coconut, eggs, vanilla, butter and half the almonds if using in a large bowl. Gradually add milk, stirring, until combined. Pour mixture into the dish.
Bake for 45-50 minutes. It should be golden on top with no discernible liquid appearing when poked.