1 ½cupsdiced rhubarbfresh or frozen, thawed and drained
Instructions
Preheat oven to 350°F and grease a 9-inch square baking pan.
In a bowl, combine flour, oats, and brown sugar. Cut in cold butter until crumbly. Reserve 1 cup of mixture for topping. Press remaining mixture firmly into the prepared pan.
In another bowl, beat cream cheese until smooth. Add sugar, salt, cinnamon, and nutmeg and mix until combined.
Stir in egg and vanilla just until blended. Fold in diced rhubarb gently.
Spread filling evenly over the crust. Sprinkle reserved crumble mixture over the top and add walnuts if using.
Bake for 40 minutes or until the top is lightly golden and the center is set.
Cool on a wire rack for 1 hour, then refrigerate for at least 2 hours before cutting into squares.
Notes
Drain frozen rhubarb well before using to avoid excess moisture. Chill fully before slicing for clean edges.