Mom's Best Homemade Brownies

4 (1 ounce) squares unsweetened baking chocolate
1 cup butter
1 cup flour
1 teaspoon baking powder
4 large eggs
2 cups sugar
2 teaspoons vanilla
2 cups chopped nuts (optional)

Preheat oven to 350 degrees.

Melt chocolate and the butter.   Let cool.

Mix flour and baking powder together in a bowl.

Beat eggs well, gradually beat in sugar.  Blend in chocolate/butter mixture and vanilla.

Add flour and baking powder mixture, then stir in nuts.  Pour into a greased 9 x 13 pan.

Bake at 350 for 30-35 minutes.

When cool, dust with powdered sugar.