Easy and Healthy Vanilla Slice Recipe

What is your favorite dessert? If you are like many people, the answer might be a vanilla slice. But what if you are on diet? Don’t worry. Nowadays, with so many people who are health-conscious, you can find any healthy vanilla slice recipe easily.

healthy vanilla slice recipe
Credit: canva

In this blog post, we will share with you several of the healthy vanilla slice recipes, whether it is for diabetics or for the keto diet plans. These recipes for healthy vanilla slices are easy to make too.

Let’s try these recipes!

What Is Vanilla Slice?

A vanilla slice is a traditional Australian dessert, consisting of three layers of pastry and cream. Light-textured vanilla custard (sometimes with added fruit) is sandwiched between two puff pastries; the top layer has whipped cream piped on as decoration.

A vanilla slice is a perfect dessert for any occasion. This easy and healthy recipe will let you indulge without feeling guilty afterward!

It takes only an hour to make this delicious dessert, which means that it’s the ideal treat on a weekday evening or during weekends too.

Why Looking for Healthy Vanilla Slice?

A vanilla slice is a perfect dessert. Everyone loves it. However, this heavenly dessert is quite high in calories.

For a serving size of 135 grams, the dish contains 413 Calories. To burn that many calories you need 1 hour of cycling, 42 minutes of running, or 2.5 hours of cleaning.

Nowadays people are looking for recipes that are healthier, have fewer calories, or are even vegan. Also, more and more people are looking for food that is suitable for diabetics, sugar-free, keto, or gluten-free.

Easy and Healthy Vanilla Slice Recipes

Easy and Healthy Vanilla Slice Recipe
Raspberry Vanilla Slice. Credit: canva

With these recipes for healthy vanilla slices, you can enjoy a dessert without worrying about calories!

And here is the recipe for our favorite easy and healthy vanilla slice. It will taste just as good as any other recipe with sugar in it. However, make sure to adjust the sugar levels according to your preferences or dietary needs:

  • For diabetics: replace the sugar with natural sweetener and sugar substitute
  • For keto diet plans: replace all of the sugar with any other sweetener, such as erythritol or xylitol.

Low Sugar Vanilla Slice Recipe (for Diabetic)

Recipes for diabetes are low in calories and are consistent with recommendations for average carbohydrate intake (about 3-4 carbohydrate servings per meal).

This is a healthy low sugar Vanilla Slice Recipe alternative made with barely any sugar. This recipe is adapted from the Natvia recipe.


  • 2 ready-made puff pastry sheets
  • 250ml milk
  • 3/4 cup natural sweetener and sugar substitute (Natvia/Stevia)
  • 1 vanilla bean
  • 3/4 cup cornflour
  • 1/2 cup unsweetened custard powder
  • 750ml thick cream
  • 50g unsalted butter
  • 3 egg yolks
  • Natvia/Stevia icing to dust


  1. Place 2 sheets of the decadent pastry dough onto a baking tray and bake for 8-10 minutes until golden brown.
  2. Place 1 cup of milk in a medium pan over medium heat. Add the scraped vanilla bean pod and seeds to the milk, let warm for a few minutes then discard them before adding sugar to taste.
  3. Mix cornflour, custard powder, and Natvia in a bowl. Strain milk to remove any stringy proteins from the seeds and vanilla bean. Pour it into the dry ingredients, ensuring they are well mixed before stirring continuously for 5 minutes for a smooth consistency
  4. Reheat the mixture, add cream, and heat it until boiling.
  5. Mix in butter and egg yolks.
  6. Line a square baking pan.
  7. Place one baked piece of pastry as the base, pour the custard mix over it, and top with the other pastry sheet.
  8. Refrigerate overnight in airtight container. Cut to size and serve

Keto Vanilla Slice Recipe (Gluten-free, Sugar-free)

The ketogenic diet, or keto for short, is a very low-carb diet that’s high in fat and moderate in protein.

This recipe is adjusted to the diet plan, adapted from madcreationhub.com.



  • ¼ cup (50g) butter, softened
  • ½ cup erythritol (use Sukrin)
  • 1 egg
  • 1 egg yolk
  • 1 tablespoon lemon juice
  • 1 tsp vanilla extract
  • 70 g almond meal
  • 1/4 teaspoon baking powder
  • 1 tablespoon coconut flour
  • ½ teaspoon salt
  • ½ teaspoon xanthan gum

Vanilla Custard:

  • 40 g powdered sweetener (use Sukrin Melis)
  • 2 teaspoons xanthan gum
  • 4 eggs
  • 400 g thickened cream
  • 1 tablespoon gelatin
  • 2 teaspoons vanilla extract

Raspberry Buttercream:

  • 25 g powdered sweetener (use Sukrin Melis)
  • 30 g raspberries
  • 100 g butter cubed
  • 100 g cream cheese cubed


For the pastry:

  1. Preheat oven to 180℃.
  2. Combine butter and sweetener until light and fluffy, then add egg yolk, whole egg, lemon juice, and vanilla. Stir for 1 minute.
  3. Mix in dry ingredients and blend well to make dough.
  4. Roll out each half of the dough to a uniform thickness, and size it accordingly for the baking tray.
  5. Lay pastry sheet on a large baking tray. Repeat with other pastry sheets.
  6. Bake for about 10-12 minutes until lightly golden.
  7. Allow to cool for 5 minutes then move to wire rack to cool completely. Biscuits will get crispier over a couple of hours. 

For the vanilla custard:

  1. Add cream and vanilla to a small saucepan. Whisking mixture over medium heat until it reaches a low simmer, then remove from the heat.
  2. In a bowl, whisk together eggs, xanthan gum, and gelatin. Mix this through the cream mix. Return to heat and continue stirring until the custard thickens and coats the back of a spoon.
  3. Remove from heat and allow to cool.
  4. Prepare the pastry, pour in custard, and top with the second sheet of pastry. Cover and chill for 3-4 hours before serving so that the custard sets.

For the raspberry buttercream:

  1. Put the sweeteners in the blender and blend for 10 seconds.
  2. Push raspberries through a sieve and add to sweetener along with butter and cream cheese.
  3. Mix for 20 seconds on speed 5. Scrape down and repeat. Continue to mix until light and fluffy is achieved.


  1. Top Vanilla Slice with buttercream. Refrigerate for 2 hours. Cut and serve.

Vegan Vanilla Custard Slice Recipe

A vegan diet includes foods from plants such as vegetables, fruits, and grains. Vegans avoid eating foods from animal products like meat, eggs, and dairy products.

This recipe is adjusted to the vegan diet rules.


  • 2 sheets puff pastry, partially thawed 
  • 1 vanilla bean, split 
  • 1-liter soy milk 
  • 1 cup caster sugar 
  • 1 1/3 cups cornflour 
  • 100g Nuttelex spread or another similar dairy-free spread 
  • 1/4 tsp ground turmeric 
  • 1/3 cup icing sugar mixture 


  1. Preheat the oven to 200C. Line 2 large baking trays with baking paper. Cut 1 sheet of pastry in half, place one on each tray and bake for 15 minutes or until golden and cooked through.
  2. Allow it to cool for 5 mins, then gently flatten it using your hand. Let it cool completely. 
  3. Meanwhile, grease the cake pan. Line the base and sides with baking paper so that it reaches 2 cm above the edges of the pan.
  4. Take a sharp knife and scrape the vanilla bean, removing all of the seeds. Place these into a saucepan with soy milk before heating it over medium heat, being careful not to let it boil.
  5. Cook for 10 minutes over medium heat (but make sure it doesn’t boil) then set it aside for 10 minutes to let the flavors infuse. Strain and discard the vanilla bean.
  6. Pour 1 layer of pastry into the already-prepared pan, trimming it if necessary.
  7. Place the caster sugar and cornflour in a large, heavy-based saucepan and gradually add the milk mixture to form a thick paste while stirring constantly with a wooden spoon.
  8. Place over medium heat and cook, stirring constantly, for 8 – 10 minutes or until the mixture bubbles and thickens. Then stir in the Nuttelex and turmeric.
  9. Working quickly, remove the mixture from the heat and spoon it over the pastry. Top with a second (trimmed) sheet of pastry, set aside to cool for 30 minutes.
  10. Refrigerate until cold and firm (4 hours or more is best).
  11. Dust it with icing sugar. Cut and serve.


What is the difference between a Bavarian slice and a vanilla slice?

One of the most popular desserts in Australia is a custard slice. Its counterpart, the Bavarian Slice, has a little more indulgence with its creamier topping and icing.

Can vegetarians eat custard?

Traditional custard typically consists of eggs, milk, and sugar; therefore, it is not suited for those following a vegan diet.

What is a vegan custard made of?

Custard usually thickens with eggs, but to make this vegan custard, we use cornstarch and plant milk – like soy or almond milk – instead of dairy.

Is Birds custard powder vegan?

The following vegan custard is both very quick and easy to make with ingredients you can easily find at home. You can technically purchase vegan custard in store, but there’s a much more satisfying taste to homemade ones.

See also: How to Make an Easy Vanilla Slice Using Instant Pudding Mix