Daring Bakers Challenge: Caramel Cake with Caramelized Butter Frosting

This month's Daring Bakers Challenge was chosen by Dolores from Culinary Curiosity. Dolores, along with Jenny of Foray into Food and Alex of Blondie and Brownie chose for us to bake Shuna's Caramel Cake with Caramelized Butter Frosting. The original recipe can be found on her blog, Bay Area Bites. I chose to make cupcakes out of the recipe, it made about 18 total. The cupcakes took about 20 minutes until a toothpick inserted in the middle of the cupcake came out clean. There is also a recipe for Golden Vanilla Bean Caramels included in this post. I didn't get to make them, but I definitely would like to try them in the future.

CARAMEL CAKE WITH CARAMELIZED BUTTER FROSTING

10 Tablespoons unsalted butter at room temperature
1 1/4 Cups granulated sugar
1/2 teaspoon kosher salt
1/3 Cup Caramel Syrup (see recipe below)
2 each eggs, at room temperature
splash vanilla extract
2 Cups all-purpose flour
1/2 teaspoon baking powder
1 cup milk, at room temperature

CARAMEL SYRUP

2 cups sugar
1/2 cup water
1 cup water (for "stopping" the caramelization process)
In a small stainless steel saucepan, with tall sides, mix water and sugar until mixture feels like wet sand. Brush down any stray sugar crystals with wet pastry brush. Turn on heat to highest flame. Cook until smoking slightly: dark amber.

When color is achieved, very carefully pour in one cup of water. Caramel will jump and sputter about! It is very dangerous, so have long sleeves on and be prepared to step back. One Daring Baker suggested putting a piece of foil that has a hole in the middle of it over the pot and pouring the water through it, in order to prevent getting burned.

Whisk over medium heat until it has reduced slightly and feels sticky between two fingers. {Obviously wait for it to cool on a spoon before touching it.}

Note: For safety reasons, have ready a bowl of ice water to plunge your hands into if any caramel should land on your skin.

CARAMELIZED BUTTER FROSTING

12 tablespoons unsalted butter
1 pound confectioner’s sugar, sifted
4-6 tablespoons heavy cream
2 teaspoons vanilla extract
2-4 tablespoons caramel syrup
Kosher or sea salt to taste

Cook butter until brown. Pour through a fine meshed sieve into a heatproof bowl, set aside to cool.

Pour cooled brown butter into mixer bowl.

In a stand mixer fitted with a paddle or whisk attachment, add confectioner's sugar a little at a time. When mixture looks too chunky to take any more, add a bit of cream and or caramel syrup. Repeat until mixture looks smooth and all confectioner's sugar has been incorporated. Add salt to taste.

Note: Caramelized butter frosting will keep in fridge for up to a month.
To smooth out from cold, microwave a bit, then mix with paddle attachment until smooth and light

(recipes above courtesy of Shuna Fish Lydon)

(Optional) GOLDEN VANILLA BEAN CARAMELS
- makes eighty-one 1-inch caramels -

Ingredients
1 cup golden syrup
2 cups sugar
3/8 teaspoon fine sea salt
2 cups heavy cream
1 1/2 teaspoons pure ground vanilla beans, purchased or ground in a coffee or spice grinders, or 1 tablespoon plus 1 teaspoon pure vanilla extract
3 tablespoons unsalted butter, cut into chunks, softened

Equipment
A 9-inch square baking pan
Candy thermometer

Procedure

Line the bottom and sides of the baking pan with aluminum foil and grease the foil. Combine the golden syrup, sugar, and salt in a heavy 3-quart saucepan and cook over medium heat, stirring with a silicone spatula or wooden spoon, until the mixture begins to simmer around the edges. Wash the sugar and syrup from the sides of the pan with a pastry brush dipped in water. Cover and cook for about 3 minutes. (Meanwhile, rinse the spatula or spoon before using it again later.) Uncover the pan and wash down the sides once more. Attach the candy thermometer to the pan, without letting it touch the bottom of the pan, and cook, uncovered (without stirring) until the mixture reaches 305°F. Meanwhile, combine the cream and ground vanilla beans (not the extract) in a small saucepan and heat until tiny bubbles form around the edges of the pan. Turn off the heat and cover the pan to keep the cream hot.

When the sugar mixture reaches 305°F, turn off the heat and stir in the butter chunks. Gradually stir in the hot cream; it will bubble up and steam dramatically, so be careful. Turn the burner back on and adjust it so that the mixture boils energetically but not violently. Stir until any thickened syrup at the bottom of the pan is dissolved and the mixture is smooth. Continue to cook, stirring occasionally, to about 245°F. Then cook, stirring constantly, to 260°f for soft, chewy caramels or 265°F; for firmer chewy caramels.

Remove the pan from the heat and stir in the vanilla extract, if using it. Pour the caramel into the lined pan. Let set for 4 to 5 hours, or overnight until firm.

Lift the pan liner from the pan and invert the sheet of caramel onto a sheet of parchment paper. Peel off the liner. Cut the caramels with an oiled knife. Wrap each caramel individually in wax paper or cellophane.