Lithuanian Rhubarb Cake

Ingredients

 * ½ cup butter
 * 1 cup sugar
 * ½ tsp soda
 * 3 cups flour

Filling

 * 5 tbsp flour
 * ¼ tsp salt
 * 1½ cups sugar
 * 4 cups rhubarb (2 lbs), cut in 1 inch pieces

Directions

 * 1) Melt butter gently.
 * 2) Meanwhile, mix sugar, baking soda, and flour.
 * 3) Add butter and crumble.
 * 4) Divide in half and press ½ out to line bottom of 9 inch square pan.

Filling

 * 1) Combine ingredients, except rhubarb.
 * 2) When mixed, pour over rhubarb and toss to coat well.
 * 3) Place in pan with crumb crust and sprinkle remaining crust on top.
 * 4) Bake 1 hour in preheated 350°F oven.
 * 5) Sprinkle with confectioners' sugar and cut in squares and serve.
 * 6) May be served with ice cream.