Ingredients

The following ingredients have 12 Servings
  • 1 cup whole milk
  • 1 stick (113 grams) unsalted butter
  • 1/4 cup (57 grams) sour cream, (at room temperature)
  • 1 envelope (2 1/4 teaspoons) instant yeast
  • 1/4 cup (50 grams) granulated sugar
  • 1 large egg, (at room temperature)
  • 2 egg yolks, (at room temperature)
  • 1/2 teaspoon vanilla extract
  • 4 to 4 1/4 cups (508 to 540 grams) all-purpose flour, (plus more for dusting)
  • 1 1/2 teaspoons fine salt
  • 10 tablespoons (142 grams) unsalted butter, (completely softened to room temperature)
  • 2/3 cup (133 grams) packed light brown sugar
  • 1/3 cup (28 grams) unsweetened cocoa powder
  • 1/8 teaspoon fine salt
  • 1 1/2 cups (188 grams) powdered sugar, (sifted)
  • 1/4 cup (21 grams) unsweetened cocoa powder, (sifted)
  • 1/4 cup whole milk
  • 2 tablespoons unsalted butter, (melted)
  • 1 teaspoon vanilla extract

Instruction