I would not recommend you to freeze these smoothie bowls, as the toppings might not have the same crunch and taste when frozen. Instead, you can freeze just the smoothie. To do this, add the smoothie to a freezer-safe glass jar and then freeze for up to 3 months. The night before you are planning to make a bowl for breakfast, place the smoothie jar in the refrigerator to defrost overnight. In the morning, add it to a bowl and top with your favorite toppings.