Raspberry Pudding Cake

1 cup granulated sugar
1 egg
1 1/2 tablespoons butter
1/2 cup milk
2 cups all-purpose flour
2 teaspoons baking powder
2 cups raspberries

Combine all ingredients except raspberries. Mix well. Add raspberries. Batter will be thick. Pour into a greased 9-inch square pan. Bake at 300 degrees F for 40 to 50 minutes.