Cake in 15 Minutes! The Famous German Apple Cake That Is Driving the World Crazy!

In a small saucepan, whisk together the egg, sugar, vanilla sugar, and cornstarch.

Slowly add the milk while whisking to avoid any lumps.

Place the saucepan over medium heat and cook, stirring constantly, until the mixture thickens to a pudding-like consistency (about 3-4 minutes). Once thickened, remove from heat and set aside to cool slightly.

2. Prepare the Cake Batter:
Preheat your oven to 180°C (350°F) and grease a 9-inch round cake pan or line it with parchment paper.

In a bowl, combine the flour, sugar, baking powder, and cinnamon (if using).

In another bowl, beat the eggs, oil (or melted butter), and vanilla extract until smooth.

Gradually add the wet ingredients to the dry ingredients, stirring just until combined.

3. Assemble the Cake: