Here’s How I Transform A Trader Joe’s Cake Mix Into 3 Easy Holiday Desserts

STEP 3: In a medium bowl or mixer, beat the cream cheese and butter until smooth. Add the confectioners’ sugar and vanilla, and beat until the mixture is fluffy and spreadable. Spread the frosting evenly over the top of the cooled loaf. Use an offset spatula to create soft lines across the surface, just like the ones on Trader Joe’s mini sheet cakes.