The Lost Kitchen's Glazed Butter Cake with Vanilla Bean Custard Sauce

The simplicity of this old-fashioned cake is part of its allure. It calls for no fancy ingredients, it’s baked in a loaf pan, and it tastes of home kitchens—of vanilla and buttermilk and, yes, butter. What renders it special is a thickly applied lacquer of vanilla- and almond-laced butter glaze. As you’re brushing it on, you will think it is too much bu…