01 -
Preheat oven to 350°F (175°C). Grease a baking dish thoroughly.
02 -
Evenly spread chopped rhubarb across the bottom of the prepared baking dish.
03 -
In a mixing bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt until combined.
04 -
Add melted butter, milk, vanilla extract, and the large egg to the dry mixture. Stir until the batter is smooth and homogeneous.
05 -
Spoon the batter evenly over the rhubarb layer in the baking dish.
06 -
Sprinkle 2 tablespoons of brown sugar uniformly over the batter to create a sticky crust.
07 -
Carefully pour 1 cup boiling water over the batter without stirring to allow the pudding to cook through the steam.
08 -
Place the dish in the oven and bake for 40 to 45 minutes, until the top turns golden and bubbling.
09 -
Remove from oven, allow to cool slightly, then serve warm to enhance flavors and texture.