Lemon Squares
["6 Tbsp. cold, unsalted butter", "1/3 c. packed light brown sugar", "1 c. plus 3 Tbsp. all-purpose flour", "1/2 c. finely ground walnuts", "2 eggs", "1 c. sugar", "2 Tbsp. fresh lemon juice", "2 tsp. grated lemon rind", "1/2 tsp. double acting baking powder", "1 Tbsp. confectioners sugar"]
["Blend the butter, brown sugar, 1 cup of the flour and the walnuts until the mixture resembles coarse meal.", "Press all but 1/2 cup of the mixture into the bottom of a 9-inch square pan. Bake in a 350\u00b0 oven for 15 to 20 minutes or until golden around the edges."]
["cold", "brown sugar", "flour", "ground walnuts", "eggs", "sugar", "lemon juice", "lemon rind", "double acting baking powder", "confectioners sugar"]