Walnut Chocolate Hearts

Ingredients (12)

• 1 cup butter, cubed
• 2/3 cup packed brown sugar
• 1 teaspoon vanilla extract
• 1 egg, lightly beaten
• 2-1/4 cups all-purpose flour
• 1/4 cup baking cocoa
• 1/2 teaspoon salt
• 3/4 cup finely chopped walnuts
• TOPPING:
• 1-1/2 cups semisweet chocolate chips
• 2 tablespoons shortening
• 1/2 cup ground walnuts