Preheat oven to 350F. Lightly grease a 9x9-inch baking pan with non-stick cooking spray; set aside.

In a large mixing bowl, whisk together the flour, sugar, baking soda, and salt.

Make a large well in the center of the dry ingredients and two small wells next to the large (the large well needs to hold at least 5 tablespoons and each small well should told at least a teaspoon).

Pour the vegetable oil into the large well, the vinegar into a small well, and the vanilla extract into the second small well. Note: it’s important to keep the wet ingredients separate until they’re stirred into the batter at the same time.

Add the water and stir the batter just until all ingredients are combined.

Fold in the sprinkles, but do not over-stir.

Pour the batter into the prepared baking pan. Bake at 350F for 25-30 minutes until a toothpick inserted into the center comes out clean.

Cool the cake completely to room temperature then frost with any frosting you like and add more sprinkles to the top.