This is probably the easiest pie you will ever make. There are only five ingredients, and you don't even need a pie plate -- a cookie sheet will do. Best of all, it is delicious. You may never eat another double-crust apple pie again!
1 refrigerated pie crust
3/4 C. sugar
2 T. cornstarch
1 T. cinnamon
4 C. peeled, thinly sliced apples (4 medium apples)
Roll out the crust on a foil-lined baking sheet to a 12-inch diameter. Combine the next three ingredients, then toss in the apple slices to coat. Spoon onto the center of the crust, spreading to within 2 inches of the edges. Fold a 2-inch edge of crust over the apples, pleating the crust as needed. Brush the crust with beaten egg and sprinkle with sugar if desired. Bake at 425 degrees for 20 minutes until the apples are tender, covering with foil if the crust gets too brown. Cool slightly before serving. Serves 8.