Rhubarb Pudding
["1 Tbsp. butter--heaping", "1 cup white sugar", "1 egg", "1/2 cup milk", "2 tsp. baking powder", "1-1/4 cup flour", "pinch of salt", "3 cups finely cut rhubarb", "1 cup sugar", "1 cup boiling water"]
["Cream butter and 1 cup sugar.", "Add egg, milk, baking powder, flour and salt.", "Mix well and put in bottom of 9 x 9 inch pan."]
["butter", "white sugar", "egg", "milk", "baking powder", "flour", "salt", "rhubarb", "sugar", "boiling water"]