Finnish Blueberry Squares

Pastry
1 c margarine or butter, softened
1/2 c sugar
2 3/4 c flour
1/4 t salt
1/2 t vanilla
1 egg

Filling
3 c fresh or frozen blueberries
1 c sugar
3 T cornstarch
1 t powdered sugar

In large bowl, combine margarine and 1/2 cup sugar; blend well. Lightly spoon flour into measuring cup; level off. Add flour, salt, vanilla and egg; blend well. Cover, refrigerate until firm, about 2 hours.

In medium saucepan, combine blueberries, 1 cup sugar and cornstarch. Cook over medium heat until mixture comes to a boil, stirring constantly. Boil 3 minutes or until thickened, stirring constantly Remove from heat; cool.

Heat oven to 375. Pat 2/3 of chilled dough into ungreased 13x9-inch pan, pressing 1/2 inch up sides, Spread blueberry mixture evenly over dough. Roll out remaining doughto 1/4-inch thickness. Cut with fluted wheel into 1/2-inch-wide strips. Arrange strips in lattice design over filling. (Strips may break apart but will bake together.) Trim and seal edges.

Bake for 30 to 40 minutes or until top is golden brown. Cool. Sprinkle with powdered sugar; cut into squares. If desired, serve with ice cream or whipped cream. Makes 12 dessert squares or 24 bars.