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I’ll say this upfront: no smoothie burns fat while you sit there drinking it. What this smoothie actually does is keep you full, cut down on mindless snacking, and make it easier to stick with your goals — which, over weeks and months, is what actually transforms the bod.
I crafted this fat-burning smoothie around a few ingredient combos that show real research support for fullness and blood sugar, then made sure it actually tastes good enough that I’d drink it often. That’s the whole strategy. If your goal this season is to slim down, start here — this recipe is one of our top-rated weight loss smoothies.

Ingredients in Fat-Burning Smoothie
- Kale: the fiber and bulk in this smoothie — barely tastes like anything once it’s blended with the fruit.
- Cucumber + celery: mostly water, so they stretch the smoothie into a bigger, more filling glass without adding many calories.
- Chia seeds: they swell up and thicken the smoothie, plus add a bit of staying power between the fiber and plant-based fat.
- Grapefruit: brings natural sweetness and the fullness benefit noted above. Removing the inner membrane before blending cuts most of the bitterness.
- Green tea: swapped in for plain water as the liquid base, so you get a little natural caffeine along with the antioxidants.
- Pineapple: balances out the grapefruit’s tartness and makes the whole thing taste more like a treat than a health food.
- Protein powder: added at the end so it blends without turning gritty — this is what turns the smoothie into something that holds you until lunch instead of an hour.
More Ingredient Combos
- Cacao + almonds: cacao’s flavanols are an active research area (including work published in BMJ) — and more importantly, chocolate that’s actually good for you makes a routine you’ll keep.
- Oats + blueberries: oats are the fiber workhorse of this whole list. The blueberry belly-fat study you may have seen was done in rats — promising, not proof — but berries + oats is a fullness combo I’d bet on regardless.
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How to Make Fat-Burning Smoothie
Of all the recipes I’ve created, this is the one I come back to: greens, fiber, and superfoods that curb my cravings and keep me energized until lunch. Five minutes, one blender — here’s how:
- Fill your blender with kale, cucumber, celery, chia seeds, grapefruit and chilled green tea.
- Puree until smooth.
- Add frozen pineapple. Remove the grapefruit’s inner membrane to cut bitterness — or swap in orange + lemon.
- Blend on high speed until combined (about 30 seconds).
- Add one serving protein powder and blend on low speed just to mix.
- Pour into a glass and serve chilled.
Common Questions
It’s best fresh, but you can store it in an airtight container in the fridge for a few hours. Give it a good shake before drinking since the chia seeds will settle.
Yes, though it won’t hold you as long. If you skip it, consider adding a spoonful of nut butter or extra chia seeds for staying power instead.
Orange and lemon together give you a similar tart-sweet balance without the bitterness, if grapefruit isn’t your thing.

Fat-Burning Smoothie
Jen HansardVideo
Ingredients
- 1 cup kale
- 1 cucumber chopped
- 1 tablespoon chia seeds
- ½ grapefruit peeled and seeded
- 1 stalk celery chopped
- ½ cup green tea chilled
- 1 cup pineapple frozen
- 1 serving whey protein isolate
Instructions
- Place kale, cucumber, chia seeds, grapefruit, celery and green tea into blender.
- Puree on high-speed until smooth.
- Add frozen pineapple to blender. Blend again on high-speed until everything is pureed.
- Add one serving protein powder and blend on low.
- Pour into a glass and enjoy!
Recipe Notes
- On medication? Grapefruit interacts with some prescriptions — swap in orange or clementine
- Pith power: The pith and peel of the grapefruit are extremely bitter but are beneficial in small amounts. To lessen the bitterness of the grapefruit, remove the fruit from the inner membranes as well as peel before using.
- Vegan? Swap whey protein with homemade protein powder or preferred powder.
- Prep ahead: chop the kale, cucumber, and celery and freeze in a bag so this comes together even faster on busy mornings.
- Adjust the tartness: if grapefruit is too bitter for you even after removing the membrane, start with half a grapefruit and add more to taste.
- Serve it cold: this one’s best straight after blending, over ice if you like it extra chilled — the texture gets watery if it sits too long.
Nutrition
Equipment
Dietary Adjustments & Substitutions
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Made this everyday for 5days. I had to mix things up because I didn’t always have the ingredients. Used banana 4xs this week but avocado today. I like it better with avocado. The first 2days I used grapefruit after that was oranges. The first 3days was spinach, last 2days was kale. The rest of the ingredients were the same, mint, pineapple, celery and tea. I liked how it tastes, the celery makes it interesting. I’m a breast cancer survivor and needed something to kick start my diet. People usually lose weight on chemo but I gained a lot of weight. I’m a eater, I’ve always celebrated my life with food so it’s hard for me. They removed my ovaries and I’m on estrogen blockers which doesn’t help when losing weight. Anyways, did this smoothie 5days this week as a lunch substitute. I still drank my coffee every morning on my way to work. Then had my usual dinners. I also walked 2 miles everyday this week. Started at 241 now I’m 237. Lost 4pounds this week! Hope this helps anyone who wants to try it.
Hi Deborah! Congrats on kicking cancer’s butt! (My mom is a survivor, also.❤️ ) Sounds like you’re doing great on your journey to wellness. Green smoothies + moving your body is an awesome way to get yourself on track! Keep up the awesome job, we’re cheering for you! 🙂
When you say 1 stalk of celery do you mean the whole thing? Or 1 piece of celery?
Hey Blanca. There are roughly 8-9 stalks in one bunch of celery. This recipe calls for just one of those stalks. You can also watch Jen make this smoothie + explain all the ingredients. It’s in the video below the recipe. 🙂
Can you pre make these smoothie up minus the tea with all other ingredent chopped, measured and ready to blend and then freeze them?
Kale yeah you can, Lauren! 😀
We love to prep our smoothies ahead of time. Makes things so much easier when it comes time to blend. Here’s an article that talks all about smoothie prep: https://simplegreensmoothies.com/meal-prep-smoothies
Thank you! I would love to try this next time i go grocery shopping!
YAY! We can’t wait for you to head to the grocery store, Akina. Make sure and reach back out and let us know what you think!
Hello
Thanks for the recipe. I can’t tolerate pineapple, it upsets my tummy. Can you suggest an alternative please.
Olivia,
Not friends with pineapple, we hear you! Some of my favorite swaps are oranges, mangoes, and peaches. Happy blending!