Step 1

Mix together flour, sugar, & butter with an electric mixer. Reserve 3/4 cup of this mixture for topping.

Step 2

To remaining flour, sugar and butter mixture, add salt, baking powder, vanilla, milk, & egg yolks and lemon zest.

Step 3

Blend well.

Step 4

Beat egg whites until firm peaks form.

Step 5

Gently fold the firm egg whites into the batter and pour into a greased 9" X 13" baking pan.

Step 6

Sprinkle blueberries over the top of the batter, sprinkle the reserved 3/4 cup of flour/sugar/butter mixture on top of the blueberries.

Step 7

Bake in 350 degree oven for 40-50 minutes.

Step 8

If using the Lemon Glaze, pour over cake after it has cooled to warm.