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1/2 cup butter
1 cup sugar
1 teaspoon vanilla
2 eggs
2 ounces unsweetened chocolate
1/2 cup flour
1/2 cup chopped walnuts
Cream butter, sugar, and vanilla; beat in eggs.
Blend in chocolate.
Stir in flour and nuts.
Bake in greased 8X8X2 inch pan at 325 degrees 30-35 minutes