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Top 10 Mega Smoothies for Weight gain (>450 calories!)

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If you are looking to gain weight, these smoothies for weight gain are going to be your best friend.

We talk a lot about weight loss on this site, but not so much about weight gain, which can be super important depending on your goals/lifestyle.

High-calorie smoothies are a great way to bulk on calories without feeling uncomfortably full!

Top 10 Mega Smoothies for Weight gain ( data-lazy-src=

There are many reasons why you might need to go on a weight gain diet! Maybe you’ve been ill and experienced unintended weight loss, or maybe you are trying to build muscle to meet a certain weight class.

Either way, smoothies are a great way to pile on some extra calories and meet your goals. When I got food poisoning while travelling, I lost a lot of weight very quickly and needed to build my strength back up.

Smoothies really helped me then, because my stomach couldn’t handle anything heavier, but drinking them as a meal replacement meant I was able to consume plenty of vitamins and minerals, and get enough calories to help my body recover!

Weight gain can have as many health benefits as weight loss.

Higher calories helps with weight gain

The science behind weight gain is as simple as the science behind weight loss: if you need to eat less than you are using to lose weight, then to gain weight your calorie intake has to be more than what you are eating.

These smoothies are all over 450 kcal, so a very solid amount of calories. The good thing is that eating 450 kcal in a drink is a lot less labor intensive than eating 450 kcal of solid food.

For comparison, that would be the equivalent of eating 5 bananas in one sitting!

I have made sure that these weight gainer shakes all use exclusively healthy ingredients, such as nut butters and seed butters for healthy fats, greek yogurt or natural protein powder, lots of fruit and veg and whole grains like hemp seeds and chia seeds.

Gaining weight with smoothies the right way

No processed rubbish here, no added sugars! You will be getting only top quality calorie content, which is always the best way to go. Everything should be available from your local grocery store.

As there are lots of fruits, seeds and oats spred about the various smoothies, that also means many of them have lots of fiber, too!

As this Harvard fiber article points out, many people really don’t get enough fiber, and most of us will benefit greatly from much more!

A delicious smoothie seems like a great option when it comes to meeting your weight gain goals, am I right? Try them now!

Time to whizz through my favorite smoothies for weight gain!

The Zesty Caulicokin Smoothie

Check out the recipe here


Protein: 27g

Calories: 677kcal

Ready in:8 minutes

Recipe by: Gigi

Bonus: high protein, satisfying

The reason smoothies are so unendingly popular is because of all time classics like this. This creamy high protein recipe is both delicious and nutritious.

Protein: 18 g
Calories: 465 kcal
Ready in: 5 minutes
Recipe by: AVirtualVegan
Bonus: creamy, simple

Thick, creamy, sweet and delicious Strawberry Peanut Butter Banana Smoothie made in minutes with just 4 ingredients. With healthy PBJ vibes, it’s such a great way to start your day! Almond butter also works.

Protein: 21g
Calories: 598 kcal
Ready in: 5 minutes
Recipe by: OccasionallyEggs
Bonus: rich, vegan

This powder free vegan protein shake is packed with seed-based protein from chia, flax, and hemp. Creamy with the addition of nut butter and frozen bananas, one smoothie has over 20 grams of protein.

Bonus: vegan, protein packed

A fruity vegan smoothie, packed with protein to fuel your day ahead. Love fruit and nuts? Then you’ll love this!

Protein: 19g
Calories: 547 kcal
Ready in: 5 minutes
Recipe by: CleanPlateMama
Bonus: high iron, no added sugar

Introducing one of the best creamy, fruity, green smoothies! This mango spinach smoothie requires only 5 ingredients and 5 minutes. I use avocado (no banana here) for healthy fats, less sugar, and extra creamy goodness!

Protein: 9g
Calories: 650 kcal
Ready in: 5 minutes
Recipe by: VeggiesDon’tBite
Bonus: comforting, warm flavors

This pumpkin pie smoothie is so easy to make and a perfect kid treat. It’s healthy, tastes amazing and perfect for fall!

Protein: 19.3g
Calories: 688 kcal
Ready in: 20 minutes
Recipe by: SummerYule
Bonus: rich, creamy

Learn how to make weight gain smoothies! This high-calorie smoothie is a great whole food option that tastes like chocolate avocado pudding! Use whole milk to up the calories.

Protein: 8g
Calories: 543 kcal
Ready in: 5 minutes
Recipe by: VeggiesDon’tBite
Bonus: satisfies your chocolate craving, healthy

Rich, thick and amazingly decadent without all the unhealthy ingredients. This frozen hot chocolate oat smoothie is so good, you’ll have no idea it’s vegan! Made with oat milk – no dairy products here!

Protein: 43 g
Calories: 745 kcal
Ready in: 10 minutes
Recipe by: RunningToTheKitchen
Bonus: super high protein, fall flavors

This cozy butternut squash smoothie is creamy and decadent tasting with hints of cinnamon and cardamom perfectly balanced out by strawberries and ginger for a delicious seasonal drink. A tasty treat you’ll want to make again and again.

Bonus: fruit filled, simple

Blueberry Banana Protein Smoothie. A superior blueberry and banana smoothie with a huge protein kick! Try it, love it – your new favorite healthy weight gain smoothie.


Prep Time:5 minutes
Total Time:5 minutes
  • 1 cup blueberries, frozen (fresh is fine too)
  • 1 ripe banana (make sure they’re soft and sweet! Keep some in the freezer like we do here)
  • 1 cup milk of choice (we use soy milk)
  • 1 tsp vanilla extract
  • 4 oz low fat cottage cheese (use regular if you prefer*)
  • 2 tbsp chia seeds
  • 1 tsp lemon zest

  • Add all the ingredients to a blender, and grate in the lemon zest.

    1 cup blueberries, frozen, 1 ripe banana, 1 cup milk of choice, 1 tsp vanilla extract, 4 oz low fat cottage cheese, 2 tbsp chia seeds, 1 tsp lemon zest, 1 serving vanilla protein powder

  • Blend. Done!
IF YOU LIKED THIS RECIPE: well, this isn’t our only awesome smoothie! Some of our very first recipes were smoothies – like this easy spinach and banana smoothie (that doesn’t taste of spinach!). This yummy fitness mega smoothie is a firm favourite too!
*please note that we use low fat cottage cheese to keep the calories and fats a little lower. You can absolutely use regular cottage cheese, of course. Also, a 30g serving of a high quality whey powder should add about another 11.5g of protein per serving.

Nutrition Facts

Top 10 Mega Smoothies for Weight gain (>450 calories!)

Amount per Serving

% Daily Value*

* Percent Daily Values are based on a 2000 calorie diet.

Smoothies for weight gain FAQs

How many calories are in a smoothie for weight gain?

Over 500 calories is a good amount for a weight gain smoothie recipe. This is the amount of modest meal, so drinking this amount of calories is an easy way to up your calorie intake.

How many smoothies a day to gain weight?

It depends how much you are eating around the smoothies. If you are eating the usual 2000 daily calories for weight maintenance, then drinking one 500 calorie smoothie a day to gain weight will be enough.

Which smoothie is best for weight gain?

The best smoothies for weight gain will be full of healthy fresh ingredients that are relatively calorie dense.

You’ll want there to be nut butters, protein sources like yogurt, some fruit and veg for the nutrients and maybe grains like oats, to bulk it out. The best smoothies for weight gain should contain around 450-500 calories.

Can you drink smoothies to gain weight?

Yes! You can drink smoothies to gain weight by drinking high calorie smoothies that contain around 500 calories of healthy ingredients.

Smoothies are helpful for weight gain because you can consume a lot of calories quickly and easily when the ingredients are all blended up.

How can a skinny person gain weight fast?

A skinny person can drink smoothies to gain weight fast.

You need a calorie surplus to gain weight, so if you calculate how many calories you need per day to maintain weight, then drink a high calorie smoothie on top of that every day, you should start gaining weight quickly.

How can I gain weight in 7 days?

Weight gain is the same as weight loss – for it to be healthy it has to occur over an extended period of time. You can gain a pound or two healthily in 7 days, but I wouldn’t recommend pushing your body much further than that.

I hope you enjoyed trying these awesome weight gain shakes and protein smoothies for weight gain. Let me know which was your favorite in the comments!

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