Fudgy Brownies

These are the best recipe I've ever had...

1 cup butter
4 squares unsweetened chocolate
2 cups sugar
4 eggs
1 cup flour
1 teaspoon vanilla extract
1/2 teaspoon salt
2 cups coarsely chopped nuts (optional)

Preheat oven to 350 degrees. Grease 13" baking pan. In large saucepan over low heat, melt butter and chocolate, stirring constantly. Remove from heat and stir in sugar. Cool slightly
Add eggs, on at a time, beating until well blended after each addition. Add flour, vanilla and salt; stir in nuts. Pour into pan and bake for 30-35 minutes, until toothpick inserted in center comes out clean. Cool in pan on wire rack; cut into pieces. Makes about 2 dozen brownies.