Preheat oven to 350 degrees. Grease two 8" cake pans and dust with flour. This will prevent the cake from sticking.
Combine all the dry ingredients in a medium bowl - flour, baking powder, and salt. Mix and set aside.
In a large bowl, cream butter until light and fluffy.
Add sugar and cream for a few minutes until the mixture is creamy and smooth.
Add one egg at a time, vanilla extract, and 2 tbsp oil. Mix well until it's all combined.
This is what you should have.
Add dry ingredients and milk in batches starting and ending with the dry ingredients. Mix, but do NOT over mix. Now begin by adding 1/3 of the dry ingredients.
Add 1/2 of the milk. Then add dry ingredients - milk - dry ingredients.
Result so far.
Add sprinkles. Mix the sprinkles in using a spatula. Do not over mix.
Batter is ready.
Split the batter evenly into 2 round baking trays. Into the oven for 25-30 minutes.
Cake is done. Let it completely cool before frosting.