MARSHMALLOW PEBBLES BARS

1 Cup All Purpose Flour
1/2 Teaspoon Baking Soda
1/2 Teaspoon Salt
1/2 Cup or 1 Stick Marg., softened
1/3 Cup Firmly Packed Light Brown Sugar
1/3 Cup Granulated Sugar
1 Egg
3/4 Teaspoon Vanilla
1/2 Cup Semi-sweet Chocolate Chips
4 Cups Minature Marshmallows
2 Cups Post Marshmallow Pebbles Cereal, divided

Preheat oven to 350. Combine flur, baking soda and salt. Beat butter and sugars together until light and creamy. Add egg and vanilla gradually and add flour mixture, beating well. Stir in choc. chips and 1 cup cereal. Spread into  a sprayed 13 x 9 baking pan. Bake on center rack for 18 to 20 minutes or until golden. Sprinkle evenly with marshmallows, return pan to oven. Bake 2 or 3 minutes longer or until puffed. Immediately sprinkle with remaining cereal, press lightly into marshmallows using the back of a large spoon. Cool in pan on a wire rack. Cut into 24 squares.