Ingredients

1/2 cup butter, softened6 tablespoons sugar6 tablespoons packed brown sugar1 large egg1/2 teaspoon vanilla extract1 cup plus 2 tablespoons all-purpose flour1/2 teaspoon baking soda1/2 teaspoon saltFILLING:1/2 cup packed brown sugar1 large egg1/8 teaspoon salt1 cup semisweet chocolate chips1/2 cup chopped walnuts

Preparation

In a large bowl, cream the butter and sugars until light and fluffy. Beat in egg and vanilla. Combine the flour, baking soda and salt; gradually add to creamed mixture and mix well.

Spoon about 2 tablespoons dough into each of 12 paper-lined muffin cups, filling each halfway. Bake at 375° for 10 minutes or until edges are light brown.

Meanwhile, in a small bowl, beat the brown sugar, egg and salt for 5 minutes or until lighter in color. Stir in chocolate chips and walnuts.

Remove partially-baked cupcakes from oven. Spoon rounded tablespoonfuls of filling into the center of each cupcake. Bake 12-14 minutes longer or until deep golden brown. Cool for 10 minutes before removing from pan to a wire rack to cool.