Three Layer Peanut Butter Bars

Directions

1. 1
   Preheat oven to 350°. In medium bowl, combine flour, sugar, baking powder and baking soda; cut in margarine and 1 teaspoon vanilla until crumbly.
2. 2
   Press firmly on bottom of ungreased 13x9-inch baking pan.
3. 3
   Bake 15 minutes at 350 degrees or until lightly browned.
4. 4
   Top evenly with marshmallows; bake 2 minutes longer or until marshmallows begin to puff.
5. 5
   Remove from oven; cool.
6. 6
   While layers are baking, in heavy saucepan, over medium heat, combine condensed milk and peanut butter ; cook and stir until slightly thickened, 6 to 8 minutes.
7. 7
   Remove from heat; stir in noodles, nuts and remaining 2 teaspoons vanilla. Spread evenly over marshmallows.
8. 8
   Cool. Chill. Cut into bars.