Preheat your oven to 350°F (175°C). Lightly grease a 9-inch springform pan.
In a medium bowl, combine graham cracker crumbs and granulated sugar. Pour in melted butter and mix until combined. Press the mixture evenly into the bottom of the prepared springform pan.
In a large bowl, beat the softened cream cheese and granulated sugar until smooth and creamy. Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract.
Gently fold in the mini marshmallows into the cream cheese mixture.
Pour the filling over the prepared crust. Bake for 50-60 minutes, or until the edges are set and the center is slightly jiggly.
Turn off the oven and let the cheesecake cool inside the oven with the door ajar for 1 hour. This helps prevent cracking.
Remove from the oven and let cool completely at room temperature. Then, cover and refrigerate for at least 4 hours, or preferably overnight, before serving.
Notes
Garnish with extra marshmallows or whipped cream if desired. Enjoy!