Best Smoothie Ingredients to Help Fill You Up | a2 Milk® USA
Best Smoothie Ingredients to Help Fill You Up | a2 Milk® USA

The 7 Best Smoothie Ingredients to Help Fill You Up

Posted on August 9, 2018

Smoothies are the perfect on-the-go snack, breakfast, or light meal replacement. The blend of fruits and veggies delivers vitamins, minerals, and protein all in one serving – plus, they taste pretty amazing!

The only downside is that many smoothies don’t keep you full until your next meal, which leaves you reaching for snacks throughout the day.

Luckily, there are many smoothie ingredients you can add to your fruit-and-veggie mixture to curb your cravings.

The best smoothie ingredients should contain fiber, protein, or healthy fats that will keep you feeling satisfied until your next meal. Here are the best smoothie ingredients to help you fill up.  

Whole Milk

Both protein and fat help keep you feeling full longer, and whole milk has a harmonious balance of these two macro-nutrients. Use ½ cup a2 Milk® Whole (80 calories, 4g protein, 4.5g fat) in your breakfast smoothie. The healthy fats and protein will help keep you full until lunchtime.

best smoothie ingredients milk

Chia Seeds

Chia seeds are a complete protein and contain fiber, omega-3 fatty acids, and calcium. Chia seeds can absorb up to 10 times their weight in liquid, transforming thin smoothies into a thick, satisfying consistency.

Add two tablespoons of chia seeds into your smoothie for 140 calories, 7 grams of unsaturated fat, and 11 grams of fiber.

best smoothie ingredients chia seeds

Flax Meal

Flax meal is one of the best smoothie ingredients because it contains healthy fats, fiber, and protein, which all promote satiety.  Flax seeds have a whole slew of other health benefits too, so add two tablespoons to your smoothies and drink up!

best smoothie ingredients flax

Peanut Butter

Peanut butter is not only delicious, but it also contains healthy fats and protein that keep you full. Add two tablespoons of peanut butter to your smoothie for 8 grams of protein and 12 grams of unsaturated fat.

If you dislike peanut butter, you can replace it with almond or cashew butter. Both contain similar macronutrient profiles.

best smoothie ingredients peanut butter


Avocados are high in calories and healthy fat and one of the best smoothie ingredients to keep you full. They also contain a healthy dose of vitamin C and B-6 which help support your immune system and metabolism, respectively.

Add half of an avocado to your smoothie for a smooth, creamy consistency.

best smoothie ingredients avocado

Under-Ripe Bananas

Under-ripe bananas are one of the most filling fruits due to their resistant starch which isn’t digested by the body. Look for bananas that are firm and slightly green. To sweeten up your smoothie, add a touch of honey, stevia, or agave nectar.

best smoothie ingredients banana


Oatmeal isn’t typically thought of as a smoothie ingredient, but due to its high fiber content, it’s the perfect addition. Add ½ cup rolled or quick oats for 150 calories that will keep you full and energized till your next meal.

best smoothie ingredients oatmeal

Our Favorite Smoothies to Keep You Full

The smoothies below contain some of the best smoothie ingredients listed above. Try them out next time you’re craving a smoothie!

  • Berry Madness Smoothie
  • Green Smoothie with Avocado and Mint

Smoothies are one of the best ways to get your vitamins and minerals for the day. By adding one or more of these filling ingredients, they can also be satisfying and delicious!


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