1. In a medium saucepan over medium heat, combine 1/2 cup sugar, 1/2 cup milk, 1/2 cup cream, and 1/4 cup butter. Heat until butter is melted, stirring occasionally. In a small bowl, whisk together the cornstarch, 2 tablespoons milk, and vanilla; stir into saucepan. Cook until thickened, stirring constantly. Remove from heat, and set aside to cool slightly.
2. Preheat oven to 400*F. In a medium bowl, combine the apples, flour, and cinnamon. Mix well.
3. Line a 9 inch pie pan with pie dough. Pour thickened filling mixture into pastry-lined pie pan. Arrange apple mixture evenly over filling. Top with second crust, seal and flute the edges. Cut slits in top crust.
4. Bake for 30 to 40 minutes, or until crust is golden brown and apples are tender. Cool for at least 30 minutes.
5. In small bowl, combine confectioners' sugar, 1 tablespoon milk, 1/4 teaspoon vanilla, and 1 tablespoon softened butter. Blend until smooth; pour evenly over warm pie. Refrigerate for AT LEAST 1 1/2 hours before serving (longer is better).
My Note: I also added a little cinnamon to the glaze which added just the right extra touch in my opinion. Try this- you'll love it. Oh- and warm each slices in the microwave about 25-30 seconds. It's so much better that way! A couple of suggestions: 1) The recipe suggests serving the pie cold, but try it at room temperature, or slightly warm (30 seconds in the microwave should do it) 2) The thinner your apple slices, the better! Try it with pear and/or peach. Adding walnut pieces is a nice variation. Use aluminum foil at the end of baking to keep the crust from getting too brown. A little extra cinnamon or lemon zest in the glaze is good. (I use an extra deep dish, make a lattice top and extra custard and glaze.) Make 2 and hide 1 if you want leftovers. Delicious!