Quick Butter Coffeecake
["2 1/4 c. flour", "1/2 c. sugar, divided", "2 tsp. double-acting baking powder", "1 c. whole milk", "1/2 c. whipped butter, melted and divided", "1 egg, beaten", "1 tsp. each: vanilla and cinnamon"]
["Preheat oven to 350\u00b0.", "Spray a 13 x 9 x 2-inch baking pan with nonstick spray; set aside.", "In a large bowl, combine flour, 1/3 cup sugar and the baking powder; set aside.", "Using a wire whisk, in a small bowl, beat together the milk, 1/3 cup melted butter, egg and vanilla.", "Pour into flour mixture.", "Beat with electric mixer until smooth.", "Pour into prepared pan and brush with remaining butter."]
["flour", "sugar", "double-acting baking powder", "milk", "whipped butter", "egg", "vanilla"]