Freezer Smoothie Packs Prep these FREEZER SMOOTHIE PACKS, and when you’re ready, just add milk, water, or juice! Ingredients 1 cup spinach, packed 1/2 banana, cut up into 1-inch pieces 1/4 cup non-fat plain Greek yogurt, frozen (about 2 frozen cubes) 1 cup mixed frozen fruit (mangoes, pineapple, strawberries) 1 to 1 & 1/4 cup [...]