Bariatric Protein Shake Recipes For Post-op Diets

During your first four weeks following surgery, you will need to adhere to a post-op diet beginning with only liquids and progressing to soft, pureed foods.

And, because higher than average protein intakes are necessary for bariatric patients, using whey protein powder in smoothies, hot cereals and soups can help ensure you get enough. On this page are several bariatric protein shake recipes and directions for how to make them.

How to Make a Protein Shake

In terms of equipment, you’ll need a blender, a magic bullet or a food processor. All you have to do is throw all the ingredients for each recipe and blend until its a smooth, non-chunky consistency.

You also can combine ingredients from each recipe, but make sure to include at least one ingredient from each category listed below, in addition to a fiber supplement.

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Whey Protein Powder

Add one serving of protein powder to each recipe. Adding your protein powder to creamy soups and hot cereals is just as easy. Puree your soup, add whey protein, then gently heat. Just make sure to stir in the protein powder.


You can blend any fruit, including fresh, sugar-free frozen, or canned fruit packed in its own juice, into a smoothie. Use about half of a cup. Frozen fruit makes for a thick smoothie drink. When using fresh or canned fruit, add a few ice cubes.


For each recipe, add 8 ounces of skim milk or soymilk (we recommend Soy Slender or Continent 8). For even more protein, also add one of the following:

  • ⅓ cup skim milk powder
  • 6 ounces of sugar-free, fat-free yogurt, cottage cheese or ricotta cheese
  • ⅓ cup of silken tofu
  • Two tablespoons of smooth nut butter


You can add just about any spice that you like. Some ideas include cinnamon, nutmeg, allspice, ginger, cardamom, fennel or parsley. Start with one-eighth of a teaspoon and add more to intensify the flavor.


If you need to, add Splenda or Nutrasweet for some extra sweetness.

Fiber Supplement

Since constipation is problematic post-op, adding a fiber supplement is recommended. One to two servings of Benefiber or flaxseed meal can be put into one serving of a shake as many as two times per day.

Protein Shake Recipes

The combinations are endless, so get creative and be sure to try different combinations. The following are some of our favorites recipes:

Just Peachy:

  • One scoop of protein powder
  • ½ cup frozen peaches
  • 6 ounces of vanilla yogurt
  • 8 ounces of vanilla soy milk
  • ⅛ teaspoon of cinnamon

Very Berry:

  • One scoop of protein powder
  • ½  cup frozen berry blend
  • ½  cup cottage cheese
  • 8 ounces of milk
  • ⅛ teaspoon of nutmeg

Hawaiian Dream:

  • One scoop of protein powder
  • ½ cup crushed pineapple
  • ⅓ cup tofu, one cup of milk
  • ⅛ teaspoon of ginger
  • A few ice cubes

Creamy Pumpkin:

  • One scoop of protein powder
  • ¼ cup canned pumpkin puree
  • one cup of milk
  • Two tablespoons of sugar-free maple syrup
  • ¼ teaspoon of cinnamon
  • A few ice cubes

Orange Carrot Blend:

  • One scoop of protein powder
  • ½ of an orange
  • One small jar of baby carrots
  • 6 ounces of vanilla yogurt
  • 6 ounces of milk
  • ½ teaspoon of vanilla
  • A few ice cubes

Peanut Butter Banana:

  • One scoop of protein powder
  • One cup of chocolate soy milk
  • ½ banana
  • Two tablespoons
  • Peanut butter
  • A few ice cubes

Note that each recipe will yield about 10 ounces per serving. When you drink your smoothy, slowly sip only the amount you can ingest — it usually comes out to about 4 ounces at a time. Cover and refrigerate any unused smoothie. Stir and enjoy the remainder within 24 hours.