Fruit and Crumb Dessert

Preheat oven at 350 degrees. Melt margarine in a saucepan. Remove from heat when melted and add baking soda, sugar and flour. Stir in until combined. Press half of the mixture into a 9" X 13" pan. Pour and spread evenly the 2 cans of pie filling over the crumb mixture. Sprinkle the remaining half of mixture over the filling. The crumbs will be soft, but don't add any additional flour. Bake 30-35 mins. or until lightly brown. Do not overbake. When cool powdered sugar can be sifted over the top. Can be served warm or cool.