In a large mixing bowl, whisk both boxes of pudding mix with 2 cups of milk (Note: this differs from the pudding box instructions).
2 boxes lemon instant pudding mix, 2 cups milk

Cut the cream cheese into cubes and add it to the pudding mixture.
8 ounces cream cheese

Using a stand or hand mixer, mix the cream cheese and the pudding mixture until well combined and then add the cool whip.

Mix in the cool whip until all ingredients are well combined.

Place the graham crackers in a food processor and blend them into crumbs. If you don’t have a food processor, you can put them in a gallon Ziploc bag and crush them by hand or with a rolling pin.
18 graham crackers

Add a layer of graham cracker crumbs to your parfait glass.