1/2 cup butter
1/2 cup semi−sweet chocolate chips
1/3 cup sugar
1 egg
1 tsp. vanilla
3/4 cup flour
2 tbls. cocoa powder
1/2 tsp. baking powder
3 cups vanilla ice cream, slightly softened

Preheat oven to 325 degrees. Line 10x15 cookie sheet with wax paper
& lightly oil paper. Melt butter and choc. chips, stir and allow to cool.
Beat together sugar & egg till pale & creamy. Beat in melted choc. and
vanilla. Add flour, cocoa, and baking powder. Continue beating until
incorporated. Transfer batter to pan and spread evenly to edges.
Bake 15 min., then remove from oven. Cool 10 min. and invert onto
cutting board. Carefully remove wax paper and, using sharp unserrated
knife, cut in half lengthwise. When completely cool, spread ice−cream
over one half of the chocolate biscuit evenly. Top with second wafer.
Wrap in plastic wrap and freeze for at least 4 hr. Cut into 8 slices.