Pumpkin Dreamboat Dessert

pkg regular Oreos, finely crushed {NOT doublestuff}

salted butter, melted

pkg {8 oz.} Philadelphia cream cheese, softened {I say Philadelphia because I haven’t been able to use an off-brand that doesn’t lump.}

granulated sugar

cold milk

tub {16 oz.} Cool Whip, divided

pkgs {3.4 oz.} instant pumpkin spice pudding mix

&1/4 cups whole milk, cold

chopped pecans