Vegan Vanilla Birthday Cake

Preheat oven to 350ºF. Grease or line 2 6-inch cake pans with parchment paper.

In a large bowl, whisk together milk and vinegar and let it stand for about 5 minutes to make buttermilk. Add sugar, oil, and vanilla extract, and whisk together until mixture becomes frothy.

Sift together flour, cornstarch, baking soda, baking powder, and salt. Add dry ingredients to the wet ingredients and whisk together until flour streaks disappears.

Divide batter evenly between pans and bake for 25–30 minutes, or until a toothpick inserted into the center of the cake comes out clean. Cool pans on wire racks for about 15 minutes. Then turn the cakes out of the pans onto the wire racks and cool completely before frosting.

For the frosting:
Using and electric hand mixer, mix butter until it softens and becomes light and fluffy, about 1 minute. Mix in vanilla and powdered sugar a little at a time until it all comes together and looks like frosting.

To assemble the cake:
Place one layer of the cake on a plate and spread about 1/2 cup of frosting on top evenly over the first layer. Place the second layer on top of the first and do the same with the frosting. Put a large dollop of frosting on the top of the cake. Work your way around the sides until the entire cake is covered with an even layer of frosting and top with sprinkles.