Heat oven to 375. Lightly spoon flour into measuring cup; level off. In large bowl, combine flour and remaining base ingredients; blend until crumbs form. Press half of mixture in ungreased 13x9" pan. Reserve remaining mixture for topping. In large bowl, combine all filling ingredients; blend well. Spread over base; sprinkle reserved mixture over filling. Bake at 375 for 25-30 minutes or until light golden brown. Cool completely; cut into bars. (