If you’re trying to gain weight, but eating big meals feels like a chore, smoothies might just be your secret weapon.
They’re fast, convenient, and easy to pack with calories and nutrients—without making you feel overly full. Whether you’re a hardgainer, recovering from illness, or simply looking to bulk up, these high-calorie smoothies can help you hit your goals (and actually enjoy the process).
Here are 5 delicious weight gain smoothie recipes using simple, affordable ingredients like oats, nut butters, fruits, and whey protein.
🥜 1. Peanut Butter Banana Bulker
Calories: ~750
Why it works: Peanut butter is calorie-dense and packed with healthy fats. Bananas add carbs and creaminess.
Ingredients:
- 2 tablespoons peanut butter
- 1 large ripe banana
- 1 scoop whey protein (vanilla or chocolate)
- 1 cup whole milk or oat milk
- 1/2 cup rolled oats
- 1 teaspoon honey (optional)
- Ice cubes (optional)
How to make it:
Blend everything until smooth. For extra calories, top with granola or a drizzle of more nut butter.
🍓 2. Berry Oat Power Shake
Calories: ~600
Why it works: A blend of slow-digesting carbs (oats), antioxidants (berries), and protein for all-day energy.
Ingredients:
- 1 cup frozen mixed berries
- 1/2 cup Greek yogurt
- 1/2 cup oats
- 1 scoop unflavored or vanilla whey protein
- 1 tablespoon chia seeds
- 1 cup whole milk or almond milk
How to make it:
Soak the oats for 5 minutes if possible for better texture, then blend everything together.
🥭 3. Tropical Mass Gainer
Calories: ~850
Why it works: Coconut and mango bring the calories and flavor. Perfect for post-workout refueling.
Ingredients:
- 1 cup frozen mango
- 1/2 frozen banana
- 2 tablespoons coconut cream or full-fat coconut milk
- 1 scoop whey or plant-based protein
- 1 tablespoon flaxseed
- 1/2 cup orange juice
- 1/2 cup water or milk
How to make it:
Blend and enjoy beach vibes while you build mass.
🍫 4. Chocolate Avocado Smoothie
Calories: ~700
Why it works: Avocado adds creamy texture and healthy fats. Cocoa gives it that dessert-like vibe.
Ingredients:
- 1/2 ripe avocado
- 1 tablespoon cocoa powder
- 1 scoop chocolate whey protein
- 1 tablespoon honey or maple syrup
- 1 cup whole milk
- 1/2 banana (optional for sweetness)
- Ice cubes
How to make it:
Blend until smooth and thick. This one tastes like a milkshake but fuels like a meal.
🧈 5. Classic Mass Gainer Blend
Calories: ~1000+
Why it works: The ultimate high-calorie shake with everything you need to gain weight fast.
Ingredients:
- 1 scoop mass gainer powder
- 2 tablespoons almond butter
- 1 banana
- 1/2 cup oats
- 1 tablespoon olive oil (trust us—it’s flavorless but powerful)
- 1.5 cups whole milk
- Dash of cinnamon
How to make it:
This is a meal in a cup. Use a blender and drink slowly—your body will thank you.
Tips for Using Smoothies to Gain Weight
✅ Add liquids gradually – Start thick, add liquid until it’s drinkable
✅ Use calorie-dense add-ons – Nut butters, full-fat yogurt, seeds, oils, and oats
✅ Track intake – Even healthy smoothies can add up; monitor your progress
✅ Be consistent – One smoothie a day = 400–1000 extra calories, easily
Final Thoughts
Smoothies are one of the easiest ways to add extra calories without feeling stuffed. Plus, they’re portable, customizable, and tasty enough to stick with long term.
Whether you’re trying to build muscle, recover from weight loss, or just want a nutritious snack that hits your calorie goal—these recipes are a great place to start.
Want a custom smoothie plan based on your body type and fitness goals? Let me know—happy to help you craft the perfect blend.
