This super moist cake is so quick and easy to make!
For the cake, preheat oven to 350F and line the bottom of a sheet pan with parchment. I used a Nordic Ware Naturals half-sheet pan(16.25x11.25).
Measure out the dry ingredients into a bowl, mix together with a fork, and set aside.
In a large bowl measure out all the remaining ingredients and whisk them together.
Add the dry ingredients to the wet and whisk everything together... make sure you get any brown sugar clumps that might be there hiding!
Pour batter into prepared sheet pan and stick it in the oven for 15-18 minutes until golden brown and gorgeous.
Remove cake from oven and put in on a rack to cool.
While the cake is cooling a bit, prepare the frosting. IN a large sauce pan melt the butter, add the milk, salt, and vanilla, and bring to a boil and then immediately shut off the heat.
Slowly add the confectioners sugar while stirring. I didn't sift my sugar, but if you want a perfectly chunk-free icing you should.
Carefully pour and spread the icing on the hot cake. I did this almost immediately, but if your frosting seems too hot you could totally wait a minute or two.
I added sprinkles because sprinkles are fabulous.
Allow the cake to cool a bit and the frosting to set. Serve warm if you can!