If you’ve ever looked at a smoothie recipe and thought that sounds healthy but probably tastes like grass – I hear you. This one is different. This Brain-Boosting Blueberry Smoothie is thick, creamy, naturally sweet, and packed with bold blueberry flavor. You would never guess there’s a full cup of spinach hiding in there! I promise it completely disappears into the berries.
But here’s what makes this smoothie truly stand out: every ingredient was chosen with intention. As a Physician Assistant and plant-based chef, I created this recipe as part of my “5 to Thrive” series — five research-backed ingredients that may help protect your brain and can likely reduce your risk of dementia based on studies. Most smoothies are healthy. This one is next level. One blender + five powerhouse ingredients. See more below about my 5 to Thrive series!
The “5 to Thrive”
5 Ingredients That May Decrease Dementia Risk
If you’ve been following along, you may have already seen my Blueberry Balsamic Lentil Salad — the first recipe in my 5 to Thrive series that honestly took off way more than I expected (check out the viral reel here). So many of you made it and loved it, which means it’s time for the next one! This Brain-Boosting Blueberry Smoothie is the second recipe in the series and it could not be easier to make.
Every recipe in the 5 to Thrive series is built around five research-backed brain-protective foods — ingredients that studies show may help reduce your risk of dementia and cognitive decline. Because protecting your brain doesn’t have to feel like a chore. It can taste really, really good.
1. Blueberries — Rich in antioxidants called anthocyanins, blueberries have been shown to improve memory and cognitive function and may help reduce the buildup of proteins associated with Alzheimer’s disease.
2. Spinach — A dark leafy green loaded with vitamin K, folate, and nitrates. Leafy greens are consistently ranked as one of the top food groups associated with slower cognitive aging — and yes, you won’t taste it at all in this smoothie!
3. Walnuts — An excellent source of omega-3 fatty acids and antioxidants, walnuts are one of the most studied nuts for brain health and have been linked to improved cognitive function.
4. Ground Flaxseed — Packed with plant-based omega-3s and lignans, flaxseed supports brain health and reduces inflammation — one of the key drivers of cognitive decline.
5. Oats — A whole grain rich in fiber that helps regulate blood sugar and supports a healthy gut-brain connection, both of which play a role in long-term brain health.
What else you need for this Blueberry Smoothie
Soy milk — Acts as the base of the smoothie. You can also use oat milk or almond milk, but soy milk is my favorite here because it adds extra protein and is very creamy. You can use sweetened or unsweetened based on your taste preference.
Frozen banana — This is what gives the smoothie its thick, creamy texture and natural sweetness. Make sure it’s frozen for the best results!
How to Make this Easy Blueberry Smoothie
Step 1: Add your liquid first. Pour 1 cup of soy milk into the blender first. This is a simple but important step — adding the liquid first helps the blender run smoothly and prevents the ingredients from getting stuck at the bottom.
Step 2: Add your remaining ingredients. Add the frozen blueberries, fresh spinach, frozen banana, walnuts, ground flax, and oats directly into the blender.
Step 3: Blend on high. Blend on high for a full 60 seconds. Because this blueberry smoothie contains walnuts and oats, it needs a little more blending time than a traditional smoothie — don’t rush this step! If it’s too thick, add a splash more soy milk and blend again.
Step 4: Taste and serve. Give it a quick taste. If you’d like it a little sweeter, add a drizzle of maple syrup and blend for a few more seconds. Pour into a glass and top with a few extra fresh blueberries and walnuts for a gorgeous presentation.
Tip: For the thickest, creamiest blueberry smoothie, make sure both your blueberries and banana are fully frozen before blending.
What else to add to a blueberry smoothie
Common Questions
I would not recommend it. Frozen blueberries are what give this smoothie its thick, creamy, ice-cold texture. Fresh blueberries will make the smoothie thin and watery. Keep a bag of frozen blueberries in your freezer and you’ll always be ready to make this!
Make sure both your blueberries and banana are fully frozen before blending. You can also reduce the soy milk to ¾ cup or add a few extra frozen blueberries for an even thicker smoothie.
Not at all! The blueberries are so bold that they completely mask the spinach. What you’ll get is a rich, deep purple smoothie with pure berry flavor — the spinach is totally undetectable!
Yes — that’s exactly why I created it! Every ingredient was chosen as part of my 5 to Thrive series, featuring five research-backed ingredients linked to a reduced risk of dementia. Delicious AND good for your brain!
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Brain-Boosting Blueberry Smoothie
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Ingredients
- 1.5 cups frozen blueberries
- 1 cup fresh spinach or baby kale
- 1 cups soy milk
- 0.5 frozen banana
- 1/4 cup old fashioned oats
- 2 tablespoons raw walnuts
- 1 tablespoons ground flaxseed
Instructions
- Add liquid before anything else: Add 1 cup soy milk to the blender first. This helps everything blend smoothly without getting stuck.
- Add remaining ingredients: Add 1 cups fresh spinach, 1.5 cups frozen blueberries, 0.5 frozen banana, 2 tablespoons walnuts, 1 tablespoons ground flax, and 0.3 cups old fashioned oats (¼ cup) to the blender.
- Blend on high: Blend on high for 1 minute until completely smooth and creamy. If it's too thick, add a splash more soy milk. If you want it sweeter, add some maple syrup or agave. Tip: Because this smoothie contains walnuts and oats, it needs a little more blending time than a traditional smoothie. Blend on high for a full minute — and a bit longer if needed — to get a perfectly smooth, creamy texture.
- Serve: Pour into a glass and top with a few extra blueberries, granola, and/or walnuts for presentation. Serve immediately and enjoy!
Notes
- Use frozen blueberries over fresh for a thicker, colder smoothie without needing ice. I made this smoothie with fresh blueberries and it turned out gloopy and not as refreshing.
- The spinach completely disappears into the blueberries — you won’t taste it at all, but you’ll get all the brain-boosting benefits!
- Soak your oats in the soy milk for 5 minutes before blending for an even creamier texture
- Ground flax is better absorbed by the body than whole flax seeds, so make sure it’s ground
- For a sweeter smoothie, add a drizzle of maple syrup or a pitted dates
- This smoothie is best served immediately.
