Take a baking sheet (or dish) that's rimmed and fits in your freezer, and line it with parchment paper if you have it.
Using 2 spoons (eating spoons or tablespoons) or a small cookie scoop, dish up 2 scoops of peanut butter for each smoothie spaced on the parchment paper-lined baking sheet. Put the tray in the freezer and let the servings freeze into coins or mounds.
Next, line your second baking sheet with parchment paper to pre-freeze the blueberries and bananas. Peel and cut the bananas in half, ensuring there is ½ a banana per smoothie. Place the bananas on half the baking sheet so they aren't touching. Put washed and dry blueberries on the other half of the baking sheet. Set the baking sheet in the freezer and let freeze for at least an hour.
Smoothie Assembly
First, set out your cups or containers for each smoothie and make an assembly line of spinach, peanut butter sheet, fruit, flax, and collagen.
Next, start to assemble by placing these ingredients in each cup: 1/2 cup of spinach on bottom, 2 tablespoons of peanut butter, 2 tablespoons of flax, 3 tablespoons of collagen (hydrolyzed gelatin), ½ banana (cut smaller if needed), and ¼ cup of frozen blueberries. Press down on ingredients as needed. Cover and place cups in the freezer until ready to use.
When ready to make a smoothie, pour the contents of one smoothie cup into the blender, add 1 cup of almond milk to the cup (about 3/4 full) to remove any remaining ingredients, then pour into the blender and blend until smooth. Serve and enjoy! For extra thick or frothy, add a small handful of ice.
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