Place all —spinach, almond milk, ice, blackberries, pecans, MCT oil, vanilla, and stevia—into a high-speed blender.
Blend on high for about 60 seconds, or until the mixture is completely smooth and creamy with no remaining chunks.
Pour into a 16-ounce glass, garnish with a sprinkle of coconut flakes and a few extra blackberries if desired, and serve immediately for the best texture.
Add a scoop of your favorite low-carb vanilla or unflavored collagen or protein powder to make it a more complete meal replacement.