The cake is a nod to Lowen's preference for solitude and caffeine as she works late into the night reading Verity's manuscript. It captures the essence of her contemplative moments and the tension of her discoveries.
Preheat oven to 350°F.
Mix flour, sugar, and baking powder.
Add butter, eggs, coffee, and vanilla. Mix until smooth.
Pour into a greased 8-inch cake pan.
Bake for 25 minutes or until a toothpick comes out clean.
Let cool before serving.