Sweet Potato Brownies #1

1/2 cup butter

2 cups granulated sugar

1 cup mashed sweet potatoes

1 teaspoon vanilla extract

4 large eggs

1 1/2 cups flour

1 teaspoon ground cinnamon

2 tablespoons confectioner's sugar

Preheat oven to 300. Grease a 9 x 9 inch baking panIn a large bowl, cream together butter with sugar. Add sweetpotatoes, vanilla and eggs, mix well. Stir in flour and cinnamon, mixwell. Pour into prepared pan.Bake for 1 hour or when knife inserted into brownies comes out clean.Sprinkle with confectioner's sugar. Remove and let cool in pan 5minutes; then transfer to cool completely on a wire rack.