01 -
Preheat oven to 175°C. In a large mixing bowl, combine graham cracker crumbs, sugar, and melted butter. Reserve 2 tablespoons of mixture for garnish. Press remaining mixture firmly into the base of a 23x33 cm baking dish.
02 -
Bake crust for 8–10 minutes or until lightly golden. Remove from oven and allow to cool completely.
03 -
In a large saucepan, combine chopped rhubarb and water. Cook over medium-high heat for 3–4 minutes, stirring occasionally, until rhubarb is softened. Add sugar, cornstarch, and strawberry gelatin powder. Continue cooking and stirring until the mixture thickens and turns clear.
04 -
Pour the hot rhubarb mixture evenly over the cooled crust. Scatter mini marshmallows evenly over the surface. Refrigerate for approximately 2 hours, or until fully set.
05 -
In a large bowl, whisk together instant vanilla pudding powder and milk until smooth and thick. Gently fold in thawed whipped topping until fully incorporated.
06 -
Spread the pudding mixture evenly over the set marshmallow layer. Sprinkle reserved crumb mixture on top. Refrigerate until completely set before slicing and serving.