Step 1

Preheat oven to 350 degrees F. Grease a 13x9 inch baking dish or line with parchment paper, set aside.

Step 2

In a large bowl mix together the cake mix, butter, eggs, vanilla extract and sprinkles until combined. Be sure not to over mix.

Step 3

Transfer batter to prepared baking dish and bake for 13-16 minutes. Each oven is different so you want to keep an eye on these and be sure they don't over cook. You want your bars to be soft when you take them out of the oven. Let the bars cool.

Step 4

Once cooled, spread cookie bars with frosting- I usually only use about half of the can of frosting. Top with sprinkles, cut into squares and enjoy.