Frozen Hot Chocolate Cheesecake

full oreos, no need to separate cookie from filling (equals about 2 cups when crushed)

white sugar

butter (melted)

package (8 ounces) cream cheese (softened)

sweetened condensed milk

milk chocolate flavored hot cocoa mixes with marshmallows

container (8 ounces) frozen whipped topping (like cool whip) (completely thawed)

marshmallow fluff

Optional garnish: Reddi Whip Spray