Skor Bars

3/4 cup margarine
3/4 cup packed brown sugar
1 1/2 cups flour
1 can sweetened condensed milk
2 TBSP margarine
1 (300 gram) package of milk chocolate chips
1 (225 gram) package of skor toffee bits

Cream the first three ingredients until well blended and mixture comes together. Press evenly into a 9x13 inch pan. Bake at 350 for 20-25 mins until light golden. Cool on wire rack while preparing filling. Heat sweetened condensed milk and 2 TBSP margarine in a heavy sauce pan stirring constantly over medium heat for 10-15 minutes or until thickened. Spread over baked base. Bake 12-15 mins longer or until golden. Sprinkle chocolate chips evenly over top. Bake 2 minutes more until chocolate it shiny and soft. Remove from oven, spread chocolate evenly. Sprinkle skor bits on top pressing lightly into chocolate. Cool completely. Store at room temperature.