Ingredients
1 cup butter, melted2 cups packed brown sugar2 teaspoons vanilla extract2 large eggs, room temperature2 cups all-purpose flour1/2 cup ground walnuts1 teaspoon baking powder1/2 teaspoon salt1/8 teaspoon baking soda1 cup chopped walnuts, toasted1 cup semisweet chocolate chunks
Preparation
Preheat oven to 350°. Line a greased 13x9-in. pan with parchment, letting ends extend up sides; grease paper.
In a large bowl, mix butter, brown sugar and vanilla until blended. Add eggs, 1 at a time, whisking to blend after each addition. In another bowl, mix flour, ground walnuts, baking powder, salt and baking soda; stir into butter mixture. Fold in walnuts and chocolate chunks.
Spread into prepared pan. Bake until a toothpick inserted in center comes out clean, 30-35 minutes (do not overbake). Cool completely in pan on a wire rack. Lifting with parchment, remove from pan. Cut into bars. Store in an airtight container.
