Ingredients:

  • 2 ½ cups (300g) all-purpose flour, plus more for dusting
  • 1 teaspoon baking powder
  • ½ teaspoon baking soda
  • ½ teaspoon salt
  • 1 cup (2 sticks / 226g) unsalted butter, browned and cooled slightly
  • 1 ¾ cups (350g) granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup (240ml) buttermilk
  • 1 cup (2 sticks / 226g) unsalted butter
  • 1 cup (200g) packed light brown sugar
  • ½ cup (120ml) heavy cream
  • ¼ teaspoon salt
  • 3-4 cups (360-480g) powdered sugar, sifted

Instructions:

  1. Preheat oven to 350°F (175°C). Grease and flour two 9-inch cake pans. Line the bottoms with parchment paper rounds.
  2. Melt butter in a saucepan over medium heat. Cook until golden brown and nutty-smelling. Let cool slightly.
  3. Whisk together flour, baking powder, baking soda, and salt in a bowl.
  4. In a stand mixer, cream together browned butter and granulated sugar until light and fluffy.
  5. Beat in eggs one at a time, then stir in vanilla extract.
  6. Gradually add the dry ingredients to the wet ingredients, alternating with buttermilk, beginning and ending with the dry ingredients. Mix until just combined. Do not overmix.
  7. Divide batter evenly between prepared pans. Bake for 30-35 minutes, or until a cake tester inserted into the center comes out clean.
  8. Let cakes cool in pans for 10 minutes before inverting onto a wire rack to cool completely.
  9. In a saucepan, melt butter over medium heat. Add brown sugar, heavy cream, and salt. Bring to a simmer, stirring constantly, until sugar is dissolved.
  10. Continue to simmer, without stirring, for 2 minutes.
  11. Remove from heat and let cool slightly (about 5-10 minutes).
  12. Gradually whisk in sifted powdered sugar until smooth and creamy. Add more or less powdered sugar to reach desired consistency.
  13. Place one cake layer on a serving plate. Spread with a generous layer of caramel icing. Top with the second cake layer and spread with remaining icing.
  14. Let the icing set slightly before slicing and serving.