Satisfy your sweet tooth with this waist-friendly frozen yogurt blueberry bark. This simple 4 ingredient recipe is the perfect spring and summer treat that even the kids will enjoy! You can get creative and incorporate different add-ins. Try nuts, strawberries, dark chocolate. The possibilities are endless! Line a sheet tray or glass dish with parchment paper. Spread the yogurt onto the parchment into an 8×8 inch square.