In an ungreased 9x13 baking pan sift together the flour, sugar, cocoa powder, baking soda, and salt. Whisk the ingredients together gently to combine.
Make 3 wells in the dry ingredients. Pour the vanilla in one, the vinegar in another, and the oil in the last. Pour the water all over the top. Using a whisk or a fork, stir the batter until smooth and combined.
Bake for 35-40 minutes, or until a toothpick inserted int he center comes out clean.
Allow the cake to cool and dust with powdered sugar or frost.
PERFECT PARTY FROSTING
Author: Cookies & Cups
Serves: approx 4 cups
1 cup salted butter, room temperature
14 ounces Marshmallow Fluff
2 cups powdered sugar
1 teaspoon vanilla
½ cup sprinkles
In the bowl of your stand mixer fitted with the paddle attachment, mix the butter on medium speed until smooth. Add in the Marshmallow Fluff and mix for an additional minute, or until smooth, scraping the sides of the bowl as necessary.
Turn the mixer to low and add in the powdered sugar, mixing until combined, then turn the mixer up to medium and mix for another minute.
Add in the sprinkles and mix until evenly incorporated.
Use immediately, or store airtight in the refrigerator for up to 5 days or in the freezer for up to a month. Bring back to room temperature before frosting.