Ingredients needed to make an Oreo cheesecake are a package of Oreo, packages of Cream cheese, a cup of sugar, a cup of sour cream, eggs, teaspoon of vanilla and Oreo pie crust. The procedure for making an Oreo cheesecake is as follows. Firstly, mix the cream cheese, sugar and vanilla into a large bowl using a food mixer. Then crush in 30 Oreo cookies. Here you can use more if you want to but this is how many we used. Then bake in the oven for 45 minutes at 325 degrees F. They should be done but stick a toothpick in it just to make sure. Now, let your cakes cool for 10 minutes and then refrigerate them for at least 3 hours before you dig in. Hope your cakes turn out well.