Rita'S Blueberry Cake
["1 c. sugar", "1 c. milk", "2 1/2 c. flour", "1 Tbsp. butter", "2 Tbsp. baking powder", "1 egg", "1 pt. blueberries"]
["Grease and flour a 9 x 13-inch pan.", "Bake at 350\u00b0 for 35 to 40 minutes, or until top is brown and toothpick comes out clean."]
["sugar", "milk", "flour", "butter", "baking powder", "egg", "blueberries"]