Blueberry Lemon Swirl Cake (Print Version)

# Ingredients:

01 - 2 1/2 cups all-purpose flour.
02 - 2 teaspoons baking powder.
03 - 1/2 teaspoon baking soda.
04 - 1/4 teaspoon salt.
05 - 1/2 cup unsalted butter, room temperature.
06 - 1 1/2 cups granulated sugar.
07 - 3 large eggs, room temperature.
08 - 1 tablespoon lemon zest.
09 - 1/4 cup fresh lemon juice.
10 - 1 teaspoon vanilla extract.
11 - 1 cup buttermilk.
12 - 1/2 cup blueberries, plus more for decoration.
13 - 1/2 cup lemon juice (for curd).
14 - 1 tablespoon lemon zest (for curd).
15 - 1/2 cup sugar (for curd).
16 - 2 egg yolks.
17 - 4 tablespoons butter (for curd).
18 - 1/2 cup blueberries (for sauce).
19 - 1/4 cup sugar (for sauce).
20 - 2 tablespoons water.
21 - 1/2 cup butter (for frosting).
22 - 2 cups powdered sugar.
23 - 2-3 tablespoons heavy cream.
24 - 1 teaspoon vanilla (for frosting).

# Instructions:

01 - Heat oven to 350°F, prepare two 8-inch cake pans.
02 - Whisk flour, baking powder, baking soda, and salt.
03 - Cream butter and sugar, add eggs, lemon zest, juice, and vanilla.
04 - Alternate dry ingredients and buttermilk, fold in blueberries.
05 - Divide batter between pans, bake 25-30 minutes.
06 - Cook lemon juice, zest, sugar, and yolks until thickened, add butter.
07 - Cook blueberries with sugar and water until thickened.
08 - Beat butter, gradually add sugar, cream, and vanilla until fluffy.
09 - Layer cake with curd, frost, then swirl blueberry sauce on top.

# Notes:

01 - Components can be made ahead.
02 - Store in refrigerator.
03 - Perfect for summer occasions.