Place all ingredients except the liquid into individual freezer-safe zip-top bags.
Squeeze out as much air as possible and seal tightly. Label each bag with the date and contents.
Lay flat in the freezer to save space. These will keep for up to 3 months.
On Christmas morning, empty one bag into your blender and add 1 cup of your preferred liquid (milk, almond milk, or juice).
Blend on high for 30-60 seconds until smooth and creamy. Add more liquid if needed to reach desired consistency.
Pour into glasses and serve immediately. Top with extra berries or granola if desired!