Rice Krispies Divine Toffee Squares

Preparation : In mixing bowl, thoroughly combine first 6 ingredients. Press into greased 8 inch square baking pan. Bake at 350 Deg. F. about 10 minutes or until just starting to brown. In heavy saucepan, combine condensed milk, 1/2 cup butter and 1/2 cup brown sugar. Over medium-low heat bring to full boil and boil 5 minutes stirring continuously. Remove from heat and pour over baked crust. Melt chocolate chips over low heat. Stir in remaining cereal until well coated; using two fork, spread over caramel layer. Chill several hours to set. Cut in squares.