Chocolate Pecan Crumble Bars

2 cups chopped Texas pecans 1 teaspoon baking soda
1/2 teaspoon salt 1 1/2 cup cold butter
2 cups semisweet chocolate chips 2 1/4 cups all-purpose flour
1 1/2 cups packed brown sugar 12 oz caramel ice cream topping
2 cups quick-cooking oats

Combine 2 cups flour, oats, brown sugar, baking soda and salt.  Cut in butter until crumbly.  Set half aside for topping.  Press the remaining crumb mixture into a greased 13-in x 9-in x 2-in baking pan.  :Bake at 350 degrees for fifteen minutes.  Sprinkle with the chocolate chips and pecans.  Whisk caramel topping and remaining flour until smooth; drizzle over top.  Sprinkle with the reserved crumb mixture.  Bake for 18-20 minutes or until golden brown.  Cool on wire rack for 2 hours before cutting.  Makes 4 1/2 dozen