Preheat oven to 350°FPrepare baking pan with parchment paper optional Combine eggs, sugar, butter and vanilla. Cream and make sure everything is well mixed.
Add birthday cake mix to mixture
add flour and combine.
If you are adding in the funfetti baking chips do it now by folding in by hand.
Divide the dough in half, rolling each half into a log as long as the baking tray. You may need a tablesppon of flour on the counter or some on your fingers in orfer to keep the dough from sticking.
Once done transfer to baking tray.
Press the biscotti loaf to about 2 1/2" wide and 1" high.
Repeat process for other portion of birthday cake batter.
Bake 20-25 minutes until the logs are firm to touch, and you can press firmly in middle. Light brown logs arefine, At this point remove from the oven, leave the oven on. Allow the biscotti to cool for no more than 15 minutes, no less than ten. Using a long, sharp knife, cut the biscotti, each will be 2 1/2" long and you can cut these as thin or thick as you prefer. I suggest 1/4" slices but this is all prefernce. As you cut each biscotti, lay it on its side, remember you are baking these cookies again. Repeat this until each loaf is fully sliced. Return the cookies and tray into the oven for about 15 minutes. The cookies need to lightly brown, not burn so watch them.
Once they are lightly browned, remove them from the oven, and allow them to cool at least 2 hours.
If you so desire, take 6 oz of baking chocolate, melt it according to package directions, and dip just the 1/4 of the biscotti into the chocolate. Then top with sprnkles. Or you can make the shiny icing and dip each cookie into the icing as well. Enjoy~ Dana XO