Instructions: Heat oven to 350F degrees. Grease and flour a 13X9X2-inch baking pan.

Lightly spoon flour into measuring cup; level off. On a medium bowl, combine flour, graham cracker crumbs, baking powder, baking soda, and salt; mix well. Set aside.

In a large bowl, beat brown sugar, shortening, and eggs until well blended. Add dry ingredients and milk; mix at low speed until well blended. Beat at medium speed 1 minute. Stir in 2/3 cup of the chocolate chips. Spread batter evenly in prepared pan. Bake for 25 to 35 minutes until toothpick inserted in center comes out clean. Cool 15 minutes.

Meanwhile, melt remaining 1/3 cup chocolate chips in a small saucepan over low heat. Spoon teaspoonfuls of marshmallow creme onto top of warm cake; carefully spread with knife dipped in hot water. Swirl melted chocolate through marshmallow creme to marble. Cool completely.

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