Prepare Ingredients: If you're using fresh berries, wash them thoroughly. Pit the dates and scoop out the avocado flesh.
Blend: Add all the ingredients—strawberries, blueberries, avocado, almond milk, Greek yogurt, chia seeds, dates, honey or maple syrup, protein powder, and collagen powder—into a blender.
Blend Until Smooth: Blend on high speed until the mixture is smooth and creamy. If the smoothie is too thick, you can add more almond milk to reach your desired consistency.
Serve: Pour the smoothie into a glass and enjoy immediately. For an extra-cool treat, you can use frozen berries or add a few ice cubes to the blender.
Optional garnish: Top with a sprinkle of chia seeds, fresh berries, or a drizzle of honey for an added touch.