From Betty Crocker's 1963 Cookbook, A Sweet Bar With A Crunchy Meringue Topping

Name: From Betty Crocker's 1963 Cookbook, A Sweet Bar With A Crunchy Meringue Topping
Cuisine: European
Ingredients: 1/4 cup shortening; 1/4 cup butter, softened; 1 cup granulated sugar; 3 egg yolks, room temperature; 1 teaspoon vanilla extract; 1-1/4 cups all-purpose flour; 1 teaspoon baking powder; 1/2 teaspoon salt; For the topping; 3 egg whites, room temperature; 1 cup packed brown sugar; 3/4 cup chopped toasted pecans; Parchment Paper