This lemon poppy seed mug cake recipe is perfect for those who want a quick and easy dessert option. To make this cake, you will need flour, sugar, baking powder, salt, milk, oil, lemon juice, lemon zest, and poppy seeds. Simply mix all the ingredients together in a microwave-safe mug, and microwave for 1-2 minutes. This cake is perfect for those who want a single-serving dessert or don't want to wait for a full-sized cake to bake.