Cauliflower Berry Smoothie

Name: Cauliflower Berry Smoothie
Prep time: 5 min
Total time: 5 min
Yield: 2 servings
Cuisine: American
Ingredients: 1 cup (240 ml) milk of choice (dairy, soy, or unsweetened almond), cold; 1½ cups (170 g) frozen cauliflower florets or riced cauliflower, raw, frozen, straight from the freezer; 1½ cups (210 g) frozen mixed berries, frozen, no thawing needed; 1 medium (120 g) ripe banana, peeled and sliced into 1-inch (2.5 cm) pieces (about 1 cup sliced); 2 tablespoons (14 g) ground flaxseed; 1 tablespoon (21 g) honey or maple syrup, adjust to taste; use maple syrup for vegan (optional); ½ teaspoon (2½ ml) pure vanilla extract (optional)

From the MyKitchenBank Kitchen

A thick, creamy purple smoothie that hides a full cup of frozen cauliflower behind sweet banana and tart mixed berries. Ground flaxseed adds fiber and omega-3s, and you won't taste the vegetable at all.

Prep: 5 min
Cook: —
Wait: 2 min
Total: 7 min
Makes: 2 smoothies (about 12 oz / 360 ml each)

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Steps

Before you start

Use cauliflower that is frozen raw (riced or florets), not cooked, for the mildest flavor.
Slice the banana and let the frozen cauliflower sit on the counter for 2 minutes if your blender is not high-powered.
Use ground flaxseed (flax meal); whole seeds will not break down and won't be absorbed.

1
Prep the fruit
- Peel the banana and cut it into 1-inch (2.5 cm) pieces.
- Measure the frozen cauliflower and frozen mixed berries and have everything beside the blender.
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Ready when: Banana is in even pieces and all frozen items are measured.
Tip: Very ripe, speckled bananas give the most sweetness and best hide the cauliflower.
2
Add liquid first
- Pour 1 cup (240 ml) cold milk into the blender jar, then add the ground flaxseed, vanilla, and honey if using.
- Liquid at the bottom helps the blades catch and prevents air pockets.
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Ready when: Liquid and flax are in the jar, with the flax sitting in the milk.
Tip: Skip the honey at first if your berries are sweet; you can add it after tasting.
3
Load the solids
- Add the banana, then the frozen cauliflower, and finish with the frozen berries on top.
- Secure the lid firmly.
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Ready when: All ingredients are layered in the jar with the heaviest frozen items on top.
Tip: Letting it sit 2 minutes is optional with a high-speed blender but helps standard ones.
4
Blend until smooth
- Start on low for 15 seconds, then increase to high and blend 45–60 seconds.
- Stop and scrape down the sides with a spatula once if any chunks stick, then blend 15 seconds more.
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Ready when: Deep purple, thick, completely smooth with no gritty flecks or visible cauliflower bits when you rub a drop between your fingers or taste it.
Tip: If the blades spin without pulling in the fruit, add 2 tablespoons more milk at a time.
5
Taste and adjust
- Taste the smoothie.
- Add honey or maple syrup 1 teaspoon at a time if you want it sweeter, or 2–4 tablespoons milk if too thick, then blend 10 seconds.
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Ready when: Thick but pourable, like a milkshake, and sweet with no vegetable taste.
6
Serve right away
- Divide between two tall glasses (about 12 oz / 360 ml each) and serve immediately with a wide straw or spoon.
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Ready when: Smoothie is cold and thick.
Tip: Drink soon; the flax keeps thickening as it stands, so stir in a splash of milk if needed.

Good to know

Tips

Always use raw frozen cauliflower; steamed then frozen can taste stronger.
Put liquid in first and heavy frozen items last for the smoothest blend.
For extra protein, add 1/2 cup (120 g) plain Greek yogurt or a scoop of vanilla protein powder and 2 tablespoons more milk.
Rinse the blender right after use; flax gets sticky when dried.

Make ahead

Portion the banana, cauliflower, berries, and flaxseed into freezer bags up to 1 month ahead. Dump a bag into the blender with the milk and blend.

Storage & reheating

Best fresh. Refrigerate in a sealed jar filled to the top for up to 24 hours; stir or shake well, as it thickens and may separate. Freeze in ice cube trays or jars for up to 2 months; thaw in the fridge overnight or re-blend frozen cubes with a splash of milk. Not intended for room-temperature storage beyond 20 minutes.

Substitutions

milk of choice (dairy, soy, or unsweetened almond) → Oat milk, coconut milk beverage, or water. Water gives a lighter, less creamy result.
ground flaxseed → Chia seeds or hemp hearts. Use 1 tablespoon chia (it thickens more) or 2 tablespoons hemp hearts.
ripe banana → 1/2 cup (85 g) frozen mango chunks. Gives similar sweetness and creaminess with a tropical flavor.
frozen cauliflower florets or riced cauliflower → Frozen zucchini slices. Equal amount; slightly milder and a little less creamy.