Weight Gain Smoothie
This weight gain smoothie recipe delivers 727 calories in a single glass, making it a great option for anyone who wants to boost their calorie intake quickly and deliciously. Its creamy, chocolatey flavor and four simple ingredients make it perfect for a quick breakfast, post-workout recovery, or snack.

What is a Weight Gainer Smoothie?
A weight gainer smoothie or weight gain shake is a high-calorie drink specifically designed to support weight gain. These calorie-dense smoothies are made with a well-balanced mix of protein, carbohydrates, and healthy fats to provide your body with the fuel it needs.
While some weight gainer shakes can be loaded with unhealthy ingredients, I prefer healthier versions, like this recipe. They not only help increase calorie intake but also add essential nutrients.
Ingredients and Substitutes
- Banana: Adds natural sweetness, creaminess, and a boost of potassium!
- Peanut Butter: Provides healthy fats, protein, and a rich, nutty flavor that complements the chocolate perfectly. Almond or cashew butter can also be used as alternatives.
- Chocolate Protein Powder: Enhances the flavor while boosting the protein content, making this smoothie an excellent post-workout option. For a different twist, try vanilla or caramel.
- Whole Milk: Adds creaminess and a significant amount of calories to the smoothie. For a dairy-free option, use plant-based milk.

Expert Tips
Here are two tips to stop ingredients from sticking to the blender, making cleanup easier!
Add Liquid First: Add the liquid (milk) to the blender first, followed by the softer ingredients like peanut butter. This stops the peanut butter from sticking to the bottom of the blender or under the blade, ensuring smoother blending.
Gradual Blending Speed: Begin blending at a low speed and gradually increase to higher speeds. This method prevents the ingredients from splashing up the sides of the blender, making cleanup quicker and easier.
Step by Step Instructions
Measure the ingredients for the weight gain smoothie. If your blender has measurements on the side, you can measure the milk inside the blender too.
1) Pour the whole milk into the blender.

2) Add the protein powder to the blender.

3) Break the banana into halves or thirds and add it to the blender, followed by the peanut butter.

4) Blend for about 20 to 30 seconds or until the mixture is smooth and there are no lumps.

5) Pour the smoothie into a glass or a protein shake bottle and serve immediately.

Storage and Leftovers
Transfer the smoothie to an airtight container or shaker bottle and store it in the fridge for up to 24 hours. Before drinking, give it a good shake or stir to re-incorporate any ingredients that may have separated.

Frequently Asked Questions
Can I swap the protein powder for weight gain powder?
Yes, you can substitute protein powder with weight gain protein powder. It works seamlessly in this recipe but will alter the nutrition. Weight gain powders typically have a higher carbohydrate and fat content compared to regular protein powder.
Should I exercise when gaining weight?
Combining a calorie surplus with regular strength training helps maximize muscle gain and minimize fat accumulation. However, whether or not you should exercise depends on your individual goals, fitness level, and overall health. It’s always a good idea to individually consult a fitness or medical professional for personalized advice tailored to your situation.
How Do I Gain Weight?
To gain weight, you need to consistently eat in a calorie surplus, meaning you consume more calories than your body burns each day—often referred to as your maintenance level. The size of this surplus determines how quickly you’ll gain weight. Here’s a breakdown:
Slow-Medium Gain
- Add 250 extra calories per day above your maintenance level.
- Expect to gain 0.5 lb (0.23 kg) per week, totaling 13 lb (5.9 kg) in six months.
Medium-Fast Gain
- Add 500 extra calories per day above your maintenance level.
- Gain approximately 1 lb (0.45 kg) per week, totaling 26 lb (11.8 kg) in six months.
Fast-Extreme Gain
- Add 1000 extra calories per day above your maintenance level.
- Gain about 2 lb (0.9 kg) per week, totaling 52 lb (23.6 kg) in six months.
Daily Weight Gain Smoothie (Fast Gain)
- Adds 727 extra calories per day above your maintenance level—ideal if you prefer a single, convenient source of extra calories.
- Gain approximately 1.4–1.5 lb (0.65–0.68 kg) per week, or about 36–39 lb (16–18 kg) in six months.

Weight Gain Smoothie (727 Calories)
Equipment
- 1 Blender
Ingredients
- 1 large Banana
- 1 ½ tbsp Peanut Butter
- 1 ½ oz Chocolate Protein Powder
- 2 cup Whole Milk (use plant-based milk to make this dairy-free and vegan)
Instructions
- Pour the whole milk into the blender.
- Add the protein powder to the blender.
- Break the banana into halves or thirds and add it to the blender, followed by the peanut butter.
- Blend for about 20 to 30 seconds or until the mixture is smooth and there are no lumps.
- Pour the smoothie into a glass or a protein shake bottle and serve immediately.