Shamrock Shake Recipe – Low Carb Mousse

shamrock shake recipe

This coming St. Patrick’s Day, why not delight your guests with this mouthwatering Shamrock Shake recipe? As you know, St. Patrick’s Day is inspired by the beauty of shamrocks and all things green.

Related reading: Low Carb St Patrick’s Day Meal Ideas

So, if you’re planning to serve a healthy dessert for your St. Patrick’s Day celebration, this low carb shamrock shake mousse is what you should serve. All ingredients are low in carbs, such as the heavy whipping cream, softened cream cheese, and powdered erythritol.

Related reading: Low Carb St. Patrick’s Day Recipes

Where did the Shamrock Shake Originate? 

The original St Patrick’s Day Shamrock Shake is said to have been created in 1967 by Hal Rosen, a McDonald’s franchise owner in Connecticut.  It was then apparently officially launched by McDonald’s in 1970.

How unhealthy is McDonald’s Shamrock Shake? 

Every year McDonalds fans look forward to the launch of a new Shamrock Shake in February which is usually only available until a few days after St Patricks Day on 17th March.

Their latest shake is made up of soft serve vanilla ice cream blended with Shamrock Shake green syrup with a whipped topping containing more sugar.

The syrup contains dyes and artificial flavoring and a small shake contains approximately 530 calories, 15 grams of fat which includes 1 gram of dangerous trans fat, plus a whopping 73 grams of sugar.

With only 5 grams of carbs per serving, this Shamrock Shake recipe from Oscar of I Hacked Diabetes is perfect for your keto diet.

Related reading: Healthy Keto St Patrick’s Day Smoothie

Type 2 Diabetes controlled with the keto diet  

Oscar had Type 2 diabetes but controls it with a low carb keto diet. He confesses that he was a carboholic and overweight as a result.

Related reading: Low Carb Diet for Diabetics

He was presecribed and took various diabetic medications before he came to the realization that he could control his blood sugar levels with the keto diet. Not only that but he lost weight and gained a lot of energy that he didn’t have prior to following the diet.

Recipe notes 

Have the cream cheese out of the fridge for about an hour before using to allow to come to room temperature. This makes it easier to mix with the other ingredients.

Use a natural green food coloring. You only need a couple of drops to impart a delicate green color but you can make it darker if you prefer.

Make sure you use powdered erythritol so the mousse is not gritty.

For the sugar free chocolate dark chocolate sweetened with stevia tastes best.

Try to use organic cheese and cream if you can to make this dessert really healthy.

Shamrock Shake Recipe

Makes 4 portions


  • 2 oz soft organic cream cheese
  • 1 cup organic heavy whipping cream
  • ¼ tsp peppermint extract
  • 2 drops green food coloring
  • 1 tbsp powdered erythritol (add more if you want it to be sweeter)

To serve

Shaved sugar-free dark chocolate
Whipped cream


1. Place cream cheese and heavy cream into a large mixing bowl. Add the color and peppermint flavoring. Beat all ingredients together using a hand mixer until the mixture forms a light and fluffy texture with stiff peaks.
2. Place 4 portions in suitable serving glasses or containers.
2. Chill for an hour.
3. Before serving, top with shaved sugar-free chocolate and a dollop of heavy whipping cream.

Refer to Oscar’s video demo for this tasty Shamrock Shake recipe:


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