Ingredients
The following ingredients have 10 Servings
- 1/2 cup light brown sugar (packed)
- 2 teaspoons cinnamon
- 1 stick (4 oz) unsalted butter (plus more for the pan)
- 1/2 cups granulated sugar
- 1/4 cup mild vegetable oil
- 2 large eggs (at room temperature)
- 1 cup low- or full-fat buttermilk (at room temperature and well-shaken)
- 1/2 cup full-fat sour cream (at room temperature)
- 2 teaspoons vanilla paste or vanilla extract
- 2 teaspoons baking powder
- 1 teaspoon baking soda
- 1 teaspoon sea salt
- 2 2/3 cups all-purpose flour
- 1 1/2 sticks (6 oz) unsalted butter (at room temperature, cut into 12 pieces)
- 3 3/4 cups confectioners’ sugar (sifted)
- 3 tablespoons low- or full-fat buttermilk (at room temperature and well-shaken)
- 1 1/2 teaspoons cinnamon (plus more for dusting, if desired)
- 1 teaspoon white vinegar
- 1 teaspoon vanilla paste or vanilla extract
