Snickerdoodle mug cake is a warm and fluffy vanilla cake filled with layers of cinnamon sugar. This easy mug dessert tastes like the classic snickerdoodle cookie as a cake.
In another, microwave safe bowl, place the butter and pour the milk. Microwave the butter and milk until melted, about 30 seconds in the microwave. Stir the mixture to fully incorporate any unmelted pieces of butter.
Assemble the snickerdoodle cake by layering 2 tablespoons (30 ml) cinnamon vanilla cake batter into the bottom of the mug, followed by 1 teaspoon of cinnamon sugar. Repeat 2 more times, layering the cake batter topped with cinnamon sugar. The top layer of the mug dessert is the cinnamon sugar layer.