A delightful dessert featuring a buttery crust, tangy rhubarb filling, and a crumbly topping.
Preheat your oven to 350°F (175°C).
Ensure your oven is fully preheated for even baking.
In a mixing bowl, combine the flour, sugar, and melted butter to form a dough.
Mix until the dough holds together but is not overly sticky.
Press the dough evenly into a greased baking dish.
Use the back of a spoon or your hands to spread the dough evenly.
In a saucepan, combine the rhubarb, sugar, and water. Cook over medium heat until the rhubarb softens.
Stir occasionally to prevent sticking.
Mix the cornstarch with a small amount of water to create a slurry, then add it to the rhubarb mixture to thicken.
Ensure the mixture is smooth and free of lumps.
Pour the rhubarb filling over the prepared crust.
Spread the filling evenly for consistent flavor in every bite.
In a bowl, combine the flour, brown sugar, and cold butter to form a crumbly mixture.
Use a pastry cutter or your fingers to achieve a crumbly texture.
Sprinkle the topping evenly over the rhubarb layer.
Ensure the topping covers the filling completely for a nice crust.
Bake in the preheated oven for 35 minutes or until the topping is golden brown.
Check for doneness by observing the color of the topping.
Allow the bars to cool completely before slicing and serving.
Cooling helps the bars set, making them easier to slice.