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Camille, SOUL's style host, in a bright cream kitchen sipping a thick pink berry smoothie through a paper straw
Wellness · 7 min read

Protein smoothie recipes: 6 that keep you full, and the formula behind them

Six protein smoothie recipes with 23 to 33 g of protein each, with or without powder, plus the five-part formula and fixes for thin or chalky smoothies.

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The short answer

A protein smoothie that keeps you full has 20 to 30 grams of protein if it is a meal, or 15 to 20 grams as a snack. Build it in five parts: 1 cup liquid, a protein, 1 cup frozen fruit, 1 tbsp fat or fiber, and a flavor.

  • Greek yogurt and cottage cheese reach 20+ grams without any powder; milk or soy milk add 7 to 8 grams a cup.
  • Blend the powder with the liquid first to avoid chalkiness, and use frozen fruit, not ice, for thickness.
  • Pick a protein powder with an independent seal such as NSF Certified for Sport.
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Most protein smoothie recipes are fruit smoothies with a scoop of powder stirred in, and they taste like it: chalky, thin, and hungry again by ten. A protein smoothie that works is built the other way round. Start with 20 to 30 grams of protein from food or powder, add frozen fruit for body, a little fat or fiber to slow it down, and only then think about flavor. Below are six protein smoothie recipes built that way, a formula for making your own, and the fixes for the usual texture problems.

How much protein should a protein smoothie have?

Aim for 20 to 30 grams if the smoothie is a meal, and 15 to 20 grams if it is a snack. That is roughly what a plate of eggs and toast or a chicken salad gives you, and it is the range most people find keeps them full until the next meal.

For context, the official minimum for adults is 0.8 grams of protein per kilogram of body weight a day, about 54 grams for a woman who weighs 68 kg (150 lb), as the Harvard T.H. Chan School of Public Health explains. If you lift weights, a large 2018 review found that muscle gains kept improving up to about 1.6 grams per kilogram a day and levelled off after that (Morton et al., British Journal of Sports Medicine). A smoothie is simply an easy place to put a quarter or a third of your day's protein.

The protein smoothie formula

Every recipe below follows the same five parts. Once you know them you can stop following recipes.

Build a protein smoothie in five parts
PartHow muchGood optionsWhy it is there
Liquid1 cup (240 ml)Milk, soy milk, kefir, cold coffeeMilk and soy milk add 7 to 8 g protein; almond and oat milk add about 1 to 3 g
Protein15 to 25 gGreek yogurt, cottage cheese, protein powder, silken tofuThe part that keeps you full
Frozen fruit1 cupBerries, banana, mango, cherriesThickness and sweetness without ice watering it down
Fat or fiber1 tbspChia, ground flax, nut butter, hemp hearts, oatsSlows digestion and adds body
FlavorA pinch to 1 tspCinnamon, vanilla, cocoa, ginger, lemon zestTaste without syrup

Swap freely inside each row. Keep the protein row fixed and the rest is taste.

6 protein smoothie recipes

Each one makes a single large glass. Blend the liquid and the soft ingredients first, then add the frozen fruit.

Six protein smoothies, with approximate protein
SmoothieIngredientsProtein
Strawberry cheesecake1 cup milk, 3/4 cup (170 g) plain Greek yogurt, 1/4 cup cottage cheese, 1 cup frozen strawberries, 1/2 tsp vanilla, 1 tbsp rolled oatsabout 33 g
Peanut butter banana1 cup soy milk, 3/4 cup (170 g) plain Greek yogurt, 1 tbsp peanut butter, 1/2 frozen banana, pinch of cinnamonabout 28 g
Chocolate cherry1 cup milk, 1 scoop chocolate whey, 1 cup frozen dark cherries, 1 tbsp cocoa powder, 1 tbsp chiaabout 32 g with a 24 g scoop
Vanilla berry1 cup milk, 1 scoop vanilla protein powder, 1 cup frozen mixed berries, 1 tbsp ground flaxabout 33 g with a 24 g scoop
Mango hemp (plant-based)1 cup soy milk, 1/2 cup silken tofu, 3 tbsp hemp hearts, 1 cup frozen mango, squeeze of limeabout 24 g
Mocha1/2 cup cold coffee, 1/2 cup milk, 3/4 cup (170 g) plain Greek yogurt, 1/2 frozen banana, 1 tbsp cocoaabout 23 g

Approximate, from USDA values; protein powders range from about 15 to 30 g a scoop, so check your label.

The two yogurt recipes are the ones to start with if you do not own protein powder. Plain Greek yogurt has around 10 grams of protein per 100 grams and makes a smoothie thick and tangy in the way a milkshake is not. Cottage cheese disappears completely once blended and adds another 6 grams per quarter cup.

Protein powder or real food?

Both work. Food sources bring calcium, texture and more staying power for most people; powder is faster and lighter. A few things decide which suits you:

  • Whey blends smoothest and tastes the most neutral. Isolate has less lactose than concentrate if dairy upsets you.
  • Pea, soy or blends are the plant options. Single pea protein can taste earthy; blends usually taste better.
  • Collagen is not a complete protein and is not a like-for-like swap for whey in a meal smoothie. Our piece on collagen supplements covers what it does and does not do.
  • Third-party testing. Supplements are not approved before sale in the US, so look for an independent seal such as NSF Certified for Sport or Informed Choice on the tub.

How do you fix a thin, chalky or foamy smoothie?

  • Too thin: use frozen fruit instead of fresh, cut the liquid to 3/4 cup, or add a tablespoon of oats or chia and let it sit two minutes.
  • Chalky: blend the powder with the liquid first, for 20 seconds, before anything else goes in. A spoon of yogurt or nut butter smooths it.
  • Foamy: whey traps air. Blend on a lower speed at the end, or let it stand for a minute.
  • Too sweet or too bland: a pinch of salt and a squeeze of lemon fix both more often than more fruit does.

Make-ahead protein smoothie packs

Portion the fruit, oats, seeds and spices into freezer bags for the week. In the morning, tip one into the blender with the liquid and the yogurt or powder. Blended smoothies keep for about a day in a sealed jar in the fridge but separate, so shake before drinking. If you want the same routine at breakfast without a blender, our list of high-protein breakfast ideas has twelve, and the green smoothie recipes show how to hide a handful of spinach in any of the six above.

Sources: USDA FoodData Central (nutrient values)

Before you buy

Questions people ask about this

How much protein should be in a protein smoothie?

Aim for 20 to 30 grams if it replaces a meal and 15 to 20 grams for a snack. That matches what a normal protein-rich meal gives you and is the range most people find keeps them full.

Can I make a protein smoothie without protein powder?

Yes. Three-quarters of a cup of plain Greek yogurt gives about 17 grams, a quarter cup of cottage cheese about 6, a cup of milk or soy milk 7 to 8, and three tablespoons of hemp hearts about 10. Two of those together reach 20 to 30 grams.

What is the best liquid for a protein smoothie?

Milk or unsweetened soy milk, because each adds 7 to 8 grams of protein a cup. Almond and oat milk are fine for taste but add only about 1 to 3 grams, so the rest has to come from yogurt or powder.

Is it OK to drink a protein smoothie every day?

For most healthy adults, yes, as long as the rest of the day includes vegetables, whole grains and other foods. If you have kidney disease or have been told to limit protein, ask your doctor first.

How do I make a protein smoothie thicker?

Use frozen fruit rather than fresh, reduce the liquid to three-quarters of a cup, and add Greek yogurt, oats or chia. Letting it stand for two minutes thickens chia and oats further.

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