The lemon curd is optional, but I encourage you to use it. Lemon pairs well with blueberries. It gives this healthy smoothie recipe a sweet tartness that really adds flavor. You can find lemon curd near the jellys in your supermarket.
Pom Wonderful makes a nice all-natural blueberry juice. Feel free to use cranberry or a cran-blueberry juice instead.
Cherry Berry Smoothie
1-1/2 cups frozen unsweetened blueberries
1 cup frozen pitted dark sweet cherries (unsweetened)
2/3 cup blueberry juice or cranberry juice
1/2 cup nonfat vanilla yogurt
1 Tbsp lemon curd (optional)
Add ingredients to your blender in order listed. Blend on high until mixture is smooth (you shouldn't be able to see any chunks of fruit). You may need to stop the blender in order to stir the fruit with a tamper or long spoon if the blender gets stuck.