Place about 2/3 of the crumbs in a 9×13 pan, set aside.
Beat cream cheese and sugar together in a mixing bowl until smooth. Beat in the milk and vanilla.
Drop by spoonfuls over the crumbs. Spread carefully using a spoon dipped in hot water. Keep dipping the spoon in the water so the mixture doesn’t stick to it. The crumbs will slide around, but that is okay. It doesn’t need to be perfectly smooth.
Arrange the sliced peaches over the top.
Whip the cream and add the sugar and vanilla. Spread over the peaches. Sprinkle the last half of crumbs over top.
Cover and chill for 2-3 hours, or over night.
Notes
You can use Vanilla Wafers instead of Pecan Sandies.
You can cut the recipe in half and make it in a square 8 or 9 inch pan.