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High-Calorie Blended Diet Recipe for Tube Feeding

By Vanessa Brown, TubieTable · Recipes

When your kiddo can only take a tiny amount per feed, every single milliliter has to count. Here's how to pack real nutrition into a small volume.

Jacob can only tolerate 60 mL per feed. Sixty. That's about four tablespoons. And he needs close to 1,500 calories a day. You do that math and you quickly realize that a regular smoothie is not going to cut it — you need to be really intentional about what goes into every blend.

If your child is volume-sensitive, calorie density isn't just something nice to think about — it's the whole game. This post breaks down which ingredients give you the most calories in the least amount of fluid, and gives you a complete recipe to try.

What even is calorie density?

Calorie density is just calories per mL. Standard commercial formulas run around 1.0 cal/mL. Most basic home blends land around 1.0–1.2 cal/mL without much effort. But for a volume-sensitive kid, you might need to get to 1.5, 1.8, even higher — and that requires being strategic about every ingredient you add.

Here are the heavy hitters — the ingredients that give you the most calories with the least added volume:

• Olive or avocado oil — 9 cal/mL. This is the highest calorie density of anything you'll blend. Two tablespoons = 240 calories and almost no volume added.
• Coconut cream — about 4 cal/mL. Use the canned kind, not coconut water or the carton stuff.
• Nut and seed butters — around 6 calories per gram. Sunflower seed butter is great if you're nut-free.
• Avocado — about 1.6 cal/mL blended, plus it makes everything creamy and smooth.
• Medjool dates — about 2.8 cal/gram. Natural, whole-food sweetness that blends down completely smooth when soaked first.
• Pea or hemp protein powder — around 4 cal/gram, adds protein without much bulk.

The trick is layering these together without adding a bunch of watery volume on top. Oil is honestly your best friend here — it's calorie-dense, flavorless in a blend, and doesn't add any extra fluid.

Avocado Power Blend (high-calorie)

Makes approximately 280 mL · 520 calories · 1.86 calories per mL

• 1/2 ripe avocado (about 100g)
• 1/2 cup full-fat canned coconut milk
• 2 tablespoons olive oil
• 1/4 cup pea protein powder
• 2 medjool dates, pitted and soaked in warm water for 10 minutes
• 1/4 cup water (add slowly — only use what you need)

Nutrition per batch

• Calories: ~520 kcal
• Protein: ~17g
• Fat: ~38g
• Carbohydrate: ~35g
• Fiber: ~7g

Why I chose these ingredients

Avocado is my go-to base for high-calorie blends. It blends silky smooth, it's full of healthy fats, and it adds creaminess without adding water. Half an avocado is about 160 calories right there.

Full-fat canned coconut milk — not the carton, not coconut water, the can — is one of the most calorie-dense liquids you can use as a base. A huge step up from oat milk or almond milk for kids who need more calories per mL.

Olive oil is the single most impactful thing you can add to a blend that needs more calories. Two tablespoons, 240 calories, barely any volume. I add it to almost everything.

Pea protein rounds out the protein without adding much bulk. If pea protein isn't tolerated, hemp protein works the same way.

How to make it

1. Soak your dates in warm water for 10 minutes, then drain. This is the step people skip and then wonder why there are date chunks — don't skip it.
2. Add everything to your blender.
3. Add water a little at a time — start with 2 tablespoons and only add more if you need it to reach a pourable consistency.
4. Blend on high for at least 90 seconds.
5. Before you feed it, test the consistency through the actual tube your child uses. It should flow easily with no resistance.

What NOT to add when you need more calories

I see this a lot in tubie parent groups — someone adds apple juice or a smoothie base to bulk up the blend. Those are mostly water with very little calorie payoff. Same with almond milk or rice milk — they're low-calorie by design. If your child needs high calorie density, those ingredients are working against you. Save them for kids who have more volume to work with.

The math part

Making sure your blend actually hits the right calories without going over on sugar, sodium, or whatever specific macro your child's dietitian is watching — that requires tracking every ingredient. I used to do this with pen and paper and it took forever. That's the whole reason I built TubieTable — you put in your child's numbers and it does the math for you.

Storing it

Refrigerate right away and use within 24 hours. For batch prep, freeze in individual feed-sized wide mouth mason jars — wide mouth matters so the blend has room to expand without cracking the jar. They keep for up to a month. Thaw overnight in the fridge. And remember — never leave a blended feed out for more than 2 hours. That's the FDA food safety guideline and it applies to home blends just like any other perishable food.

This information is educational and not a substitute for professional medical advice. Always consult your child's doctor or registered dietitian before changing a tube feeding plan.