Ingredients
Equipment
Method
Whisk, discard, butter, sugar, eggs, buttermilk, and vanilla.
Whisk flour, baking powder, baking soda, and salt separately.
Fold dry ingredients into wet just until combined.
Mix brown sugar and cinnamon for the swirl.
Layer batter and swirl in the pan, then marble with a knife.
Bake at 350°F for 50 to 55 minutes, cool, then glaze and slice.
