Step 1

Preheat oven to 350 degrees

Step 2

In a stand mixer with the paddle attachment, cream together the butter and sugar until light and fluffy

Step 3

In a medium bowl, whisk together flour, salt and baking powder

Step 4

Add eggs, vanilla and lemon zest and beat well

Step 5

Add in the flour and milk, alternating between and ending with the flour

Step 6

Mix the cake batter until well combined

Step 7

Fold in blueberries

Step 8

Pour the batter into a greased or parchment paper lined square 8" inch pan

Step 9

Bake at 350 for 30 minutes or until the top is golden brown and a toothpick comes out clean from the center

Step 10

Let cool on a wire rack for 30 minutes before frosting

Step 11

FROSTING

Step 12

In the stand of a mixer, beat the butter until light and creamy (about 2-3 minutes)

Step 13

Gradually add the powdered sugar, one cup at a time, beating slowly until the sugar is fully incorporated. After each addition, increase the speed to medium and beat until the mixture is smooth and creamy. Scrape down the sides of the bowl as needed.

Step 14

Add the vanilla extract and 1-2 tablespoons of milk the mixture. Beat on medium speed for about 1 minute. If the frosting is too thick, add more milk or cream, one tablespoon at a time, until you reach the desired consistency.