Easy Peach Cobbler
["4 c. peeled, sliced fresh peaches", "1/2 c. butter or oleo, softened", "3/4 c. sugar", "1 c. all-purpose flour", "1 tsp. baking powder", "1/2 tsp. salt", "1/2 c. milk", "1/2 tsp. vanilla extract", "3/4 c. sugar", "1 tsp. cornstarch", "1 c. boiling water"]
["Place peaches in a lightly greased 12 x 8 x 2-inch baking dish. Set aside. Cream butter and add 3/4 cup sugar. Beat well."]
["peaches", "butter", "sugar", "flour", "baking powder", "salt", "milk", "vanilla extract", "sugar", "cornstarch", "boiling water"]