Caramel Swiss Buttercream ( From: Sweetapolita)

Yield: ~4 cups

Ingredients

1 cup (200 g/7 oz) sugar

1/4 cup (60 mL) water

1/4 cup (60 mL) heavy cream (whipping cream)

1 1/2 cups (340 g/12 oz) unsalted butter, at room temperature

4 large egg whites (120 g/4 oz)

1 teaspoon (5 mL) pure vanilla extract

Method

The first step is making the salted caramel (you can also do a non-salted caramel by omitting the sea salt), to set aside to cool while you make the Swiss Buttercream. You then add the cooled caramel sauce it to the buttercream as the very last step. I haven’t tried buying ready-made gourmet caramel sauce and adding it, but I suspect it would taste nothing short of awesome.

1. Place 130 grams (5 ounces or 1/2 cup + 2 tablespoons) of the sugar and the water in a medium saucepan to a boil over medium heat. Brush down the sides of the pot with a dampened pastry brush to prevent sugar crystals from forming. Stop stirring and cook until caramel is dark amber, gently swirling from time to time. Remove from heat, and slowly add cream, whisking by hand until smooth. It will be splatter, so be careful. Let cool.

2. Place butter in an electric mixer fitted with the paddle attachment (flat beater) and beat on medium speed (I use #4 on my mixer), until pale and fluffy, about 3-5 minutes. Transfer to a large bowl and set aside.

3. Wipe the bowl of an electric mixer clean with lemon juice, and place egg whites and remaining sugar into bowl over a pot of simmering (not boiling–you don’t want to cook the eggs). Whisk occasionally and gently until sugar dissolves and mixture registers 160° on a candy thermometer.

4. Remove the bowl from heat, and place back onto the mixer fitted with the whisk attachment. Whisk on medium speed for 5 minutes. Increase speed to medium-high, and whisk until stiff, glossy peaks form (about 5-6 minutes). Once the bottom of the bowl is neutral and no longer warm to the touch, reduce speed to medium-low, and add beaten butter, one cup at a time, whisking well after each addition.

5. Switch to paddle attachment. With mixer on low speed, add cooled caramel, and beat until smooth (about 3-5 minutes).

6. Prepare to taste the most incredible buttercream you will ever encounter.

*Note: You can make this Salted Caramel Buttercream by whisking generous pinch of sea salt/Fleur de Sel into caramel before it cools, as found in my Sweet & Salty: Salted Caramel Chocolate Fudge Cake