Preheat oven to 350 degrees F.
Mix first 4 dry ingredients in a greased 8" square baking pan.
Make 3 indents into the dry ingredients - two small, one larger.
Pour the vinegar into one. The vanilla in one and oil in the larger one.
Pour the water on top, add sprinkles and mix until well combined.
Bake for 30-35 mins.
Top with vanilla frosting (I used canned but feel free to make homemade!)