Buttermilk-Blueberry Breakfast Cake

Buttermilk-Blueberry Breakfast Cake Ingredients ½ cup unsalted butter, room temperature 2 tsp. lemon zest or more — zest from 1 large lemon 7/8 cup* + 1 tablespoon sugar** 1 egg, room temperature 1 tsp. vanilla 2 cups flour (set aside 1/4 cup of this to toss with the blueberries) 2 tsp. baking powder 1 tsp. kosher salt 2 cups fresh blueberries ½ cup buttermilk*** * 7/8 cup = 3/4 cup + 2 tablespoons ** This 1 tablespoon is for sprinkling on top *** To make homemade buttermilk, place 1 tablespoon of vinegar or lemon juice in a liquid measuring cup. Fill cup with milk until it reaches the 1-cup line. Let stand for five minutes. Use only 1/2 cup of the prepared mixture for the recipe. See full instructions on: www.alexandracooks.com