Melt chocolate with butter over hot water; cool. Add eggs and sugar, and beat until well blended. Combine flour, baking powder and salt; stir into chocolate mixture with hazelnuts and vanilla. Spread mixture evenly in lightly-greased 8-inch square pan. Bake in a 350 oven for 25 to 30 minutes. Cool 10 minutes; cut into squares with sharp knife.

Hazelnut Industry and The Hazelnut Marketing Board