Caramel pudding cake

Caramel pudding cake 1 cup butter 3 cups flour 1 teaspoon salt 2 cups brown sugar 1 cup granulated sugar 1 teaspoon baking powder 1 cup milk 4 cups boiling water Cream butter and granulated sugar. Add flower, baking powder and salt. Stir in milk and mix until smooth. Spread into greased 9x13-inch pan. Boil water and dissolve brown sugar. Pour over batter. Bake at 350°F for 1 hour.