1 cup all-purpose flour
2 cups white sugar
1 teaspoon baking powder
1/2 teaspoon salt
8 egg yolks, beaten
2 1/2 cups milk
1 teaspoon vanilla extract
1 cup butter, softened
1 cup brown sugar
1 cup light cream
3 tablespoons cornstarch
Preheat oven to 200 degrees F (95 degrees C).
In a large bowl, combine the flour, sugar, baking powder, salt and eggs. Beat until smooth. Stir into the creamed mixture until well blended. Stir in milk, vanilla extract and butter until well blended. Mix evenly. Spread evenly over the pie crust.
Bake in preheated oven for 5 to 10 minutes, until toothpick inserted in center comes out clean. Cool before removing from oven. Cool completely before cutting into squares.