This reminds me of a little happiness in a jar and what perfect way to celebrate a loved ones birthday then by surprising them with this treat.
I resorted to this as I wasn't so keen on the idea of making an entire cake. While on Pinterest, I came upon the neat idea of cakes baked in jar's, so I though why not a mini-birthday cake for one. But knowing me, I had to put a twist on it. Instead of using a regular cake mix, I made cake batter blondies. They differ as they have a gooey rich consistency, hence its name.
Depending on the jar size, bake at 350 for 15-18 minutes. Them simply add some frosting on top with sprinkles and voila!