Lemon Blueberry Cupcakes

Ingredients

Cupcakes

1 2/3 cups all purpose flour

1 cup sugar

3/4 tsp baking soda

1 tsp baking powder

3/4 cup salted butter, room temperature

3 egg whites

1/2 tsp vanilla extract

1/2 cup sour cream

1/2 cup milk

3 tbsp lemon juice

1 tbsp lemon zest

1 1/2 cups blueberries



Lemon Buttercream

1/2 cups butter

1/2 cups shortening

4 cups powdered sugar

1 tsp finely grated lemon zest

2 tbsp lemon juice

1/4 tsp vanilla