Hazelnut Brownies

Preheat oven to 325 degrees. Butter a 9x9 inch baking pan. Combine unsweetened chocolate and butter in a medium saucepan. Stir over low heat until melted and smooth. Remove pan from heat and stir in sugar, vanilla and salt. Add eggs 1 at a time, mixing well after each addition. Stir in flour, hazelnuts and semisweet chips. Pour batter into the prepared pan. Bake about 35 minutes until brownies are firm and a toothpick comes out with a few crumbs. Transfer pan to a rack and cool completely. Cut into squares.