This funfetti earthquake cake is a white cake mix loaded with sprinkles and funfetti chocolate chips. Swirl in the cream cheese frosting layer and it bakes into the cake creating crevices and cracks on top of the cake.
Lightly spray a 9 x 13 inch pan with non-stick cooking spray.
Sprinkle confetti chocolate chips on the bottom of the pan.
Using an electric mixer, beat the funfetti cake mix with the oil, eggs, and milk until combined on low.
Pour the cake mix on top of the confetti chocolate chips.
Using an electric mixer, beat the cream cheese, melted butter and vanilla until combined. Gradually add the powdered sugar, mixing until thick, add in the sprinkles and mix one last time. Transfer the frosting mixture into a piping bag (or ziplock bag with the corner cut off).
Pipe the frosting mixture over the cake batter, creating any pattern you wish. Use a butter knife to create swirls. Top the cake with additional sprinkles.
Bake for 30 minutes. Then loosely place a piece of aluminum foil over the cake and bake for 5-10 for minutes (for a total bake time of 35-40 minutes).
Allow the cake to cool completely before serving. The frosting layer should “sink” into the cake, creating ribbons of frosting INSIDE the cake!
Cover and keep on the counter if you’ll be serving the cake in the next day or two. Otherwise refrigerate.