Peanut Butter Mississippi Mud Bars Recipe

• 8 Tbsp. (1 stick) unsalted butter, softened
• 1 c. firmly packed light brown sugar
• 1/2 c. creamy peanut butter
• 1 lrg egg, at room temperature
• 1 Tbsp. pure vanilla extract
• 1 c. all-purpose flour
• 1/2 tsp baking soda
• 1/4 tsp salt
• 8 ounce white chocolate, coarsely minced and divided into two (4-oz)
•     portions
• 8 ounce semisweet chocolate, coarsely minced and divided into two (4-oz)
•     portions
• 1 c. coarsely minced pecans, toasted and divided into two 1/2 c. portions

Directions