Peachy Cinnamon Coffeecake
["1 pkg. cinnamon swirl with crumb topping muffin mix (Duncan Hines)", "1 (8 1/4 oz.) can sliced peaches in juice", "1 egg"]
["Preheat oven to 400\u00b0.", "Grease 8-inch square pan.", "Drain peaches; reserve juice.", "Add milk to reserved juice to equal 3/4 cup liquid.", "Chop peaches."]
["cinnamon", "peaches", "egg"]