Cake: Preheat oven to 350 °F. Grease 15-1/2 x 10-1/2 x 1-inch baking pan. Line with waxed paper. In a small bowl, combine flour and salt; set aside. In a large mixing bowl, cream together butter and sugars until light and fluffy; beat in eggs and vanilla extract. Gradually blend in flour mixture. Stir in 1 cup Nestlé Little Bits. Spread into prepared pan. Bake 20 to 25 minutes. Cool completely. Loosen sides of cake. Invert onto lightly floured cloth. Peel off waxed paper. Cut cake crosswise into 3-3/4 x 10 inch sections. Spread 3 slightly rounded tablespoons frosting on one cake layer. Top with second layer. Repeat layers. frost with remaining frosting.

Frosting: Melt over hot (not boiling) water, 1 cup Nestlé Little Bits; stir until smooth. * Set aside. In a bowl, cream butter and confectioners' sugar. Add melted chocolate and vanilla extract; blend until smooth.