Preheat your oven to 350°F (175°C). In a bowl, mix crushed graham crackers with melted butter and sugar. Stir until combined.
Press the mixture firmly into the bottom of a 9-inch springform pan. Bake for 10 minutes, then let it cool.
In a saucepan, combine chopped rhubarb, sugar, and water. Cook over medium heat until the rhubarb is soft, about 10 minutes. Let it cool.
In a large bowl, beat cream cheese until smooth. Add sugar, vanilla extract, and eggs, one at a time. Mix until creamy.
Gently fold the cooled rhubarb into the cheesecake mixture. Be careful not to overmix; you want to see swirls of rhubarb!
Pour the filling over the cooled crust. Bake for 50-60 minutes, or until the center is set but still slightly jiggly. Turn off the oven and let it cool inside for an hour.
Refrigerate the cheesecake for at least 4 hours, or overnight for the best flavor. Patience is key!
Carefully remove the cheesecake from the springform pan. Slice, serve, and watch everyone enjoy your delicious rhubarb cheesecake!