Step 1

Preheat oven to 325° F.Line 13 x 9-inch baking pan with parchment paper or foillightly greased.

Step 2

Combine flourbaking soda and salt in small bowl.Beat buttergranulated sugarbrown sugar and vanilla extract in large mixer bowl until creamy.Add eggsone at a timebeating well after each addition.Gradually beat in flour mixture.Stir in morsels and 1 cup pretzel pieces.

Step 3

Bake for 30 to 34 minutes or until wooden pick inserted in center comes out clean.Remove from oven to wire rack to cool completely.Lift from pan; remove paper or foil.Cut into bars.Drizzle with dulce de leche and remaining 1/2 cup pretzel pieces before serving.