Chocolate buttercream with Swiss meringue

Chocolate buttercream with Swiss meringue is a medium French recipe that serves 12. 250 calories per serving. Recipe by Il était une fois la pâtisserie on YouTube.

Prep: 23 min | Cook: 8 min | Total: 39 min

Cost: $6.70 total, $0.56 per serving

Ingredients

  • 200 g Granulated sugar (Granulated, not powdered)
  • 4 unités Egg whites (At room temperature)
  • 250 g Unsalted butter (Softened, not melted)
  • 200 g 70% cacao dark chocolate (High quality, at room temperature before incorporation)
  • 5 ml Liquid vanilla extract (Approximately 1 teaspoon)

Instructions

  1. Prepare the double boiler

    Place the sugar and egg whites in the stainless steel bowl and set the bowl over a pot of simmering water.

    Time: PT5M

  2. Heat the meringue to 50 °C

    Whisk the mixture with the hand whisk until the thermometer reads 50 °C.

    Time: PT5M

    Temperature: 50°C

  3. Cool the meringue

    Continue whisking until the mixture returns to room temperature and forms stiff peaks.

    Time: PT5M

  4. Soften the butter

    Cut the butter into cubes and microwave for 10 s or place near a heat source until very soft, but not melted.

    Time: PT2M

  5. Incorporate the butter

    Add the softened butter gradually to the meringue while whisking at medium speed. The buttercream may initially look grainy, which is normal.

    Time: PT5M

  6. Melt the chocolate

    Melt the dark chocolate in a double boiler or microwave in 20 s intervals, stirring between each.

    Time: PT3M

  7. Temper the chocolate

    Allow the melted chocolate to cool to room temperature (neither too hot nor too cold).

    Time: PT2M

  8. Incorporate the chocolate and vanilla

    Pour the tempered chocolate and vanilla extract into the buttercream, then whisk at low speed until fully homogeneous.

    Time: PT3M

  9. Store the buttercream

    Transfer the buttercream to an airtight container, cover with plastic film in contact, and refrigerate until use.

    Time: PT1M

Nutrition Facts

Calories
250
Protein
2 g
Carbohydrates
25 g
Fat
15 g
Fiber
2 g

Dietary info: vegetarian, gluten-free, low-calorie

Allergens: eggs, milk (butter), soy (chocolate may contain soy)

Last updated: April 7, 2026

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Chocolate buttercream with Swiss meringue

Recipe by Il était une fois la pâtisserie

A light and creamy buttercream thanks to Swiss meringue, enriched with dark chocolate. Ideal for filling and decorating layer‑cakes, cupcakes or any other cake.

MediumFrenchServes 12

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
23m
Prep
8m
Cook
10m
Cleanup
41m
Total

Cost Breakdown

$6.70
Total cost
$0.56
Per serving

Critical Success Points

  • Heat the meringue to exactly 50 °C.
  • Soften the butter without melting it.
  • Incorporate the butter slowly to avoid separation.
  • Melt the chocolate without overheating.
  • Ensure the chocolate is at room temperature before adding.

Safety Warnings

  • The sugar syrup reaches 50 °C; handle with care to avoid burns.
  • Use the infrared thermometer from a distance to avoid burning yourself.
  • The melted chocolate is very hot; stir with a heat‑resistant spatula.

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