Fudgy Brownies

4 squares unsweetened baking chocolate
1/2 cup butter
4 eggs
2 cups sugar
1 cup flour
1 teaspoon vanilla
1 cup chopped walnuts

Melt chocolate and butter in double boiler. Cool slightly. Beat eggs until foamy. Gradually add sugar to eggs, beating well after each addition. Blend in chocolate. Stir in flour. Add vanilla and nuts. Spread in greased 9" square pan. Bake at 325 degrees for 40 minutes. Cool then cut into 24 squares.