01 -
Preheat oven to 350°F. Grease a 9-inch square baking pan and optionally line with parchment paper.
02 -
In a bowl, combine flour, oats, and brown sugar. Cut in the cold butter until mixture is crumbly. Reserve 1 cup for topping.
03 -
Press remaining mixture into the bottom of the pan to form an even crust.
04 -
In a separate bowl, beat cream cheese, sugar, salt, cinnamon, and nutmeg until smooth. Add egg and vanilla; mix until just combined.
05 -
Gently fold in the diced rhubarb without overmixing.
06 -
Spread cheesecake mixture evenly over crust. Sprinkle reserved crumb topping on top.
07 -
Bake for 40 minutes, or until filling is set and topping is golden.
08 -
Cool on a wire rack for 1 hour. Cover and refrigerate for at least 2 hours before slicing.