Deep-Dish Apple Pie 21 With all that delicious fruit an apple pie should be healthy, but the truth is a slice can have as much as 750 calories and 30 grams of fat. For the most part, the culprit is the crust. We use whole-wheat pastry flour to add fiber and lower the saturated fat by replacing some of the butter with canola oil. The brown sugar-sweetened filling in this pie is made with two kinds of apples for the perfect balance. A slice has half the calories of a typical version and only 10 grams of fat--sweet!