Wash the rhubarb and cut off the ends, peeling is not necessary. Cut the sticks into small cubes and mix with 1 tablespoon of sugar. Place paper liners in a muffin tin and set aside.

Mix the flour and baking powder. Mix the milk, oil, eggs, vanilla pulp, sugar and salt, then add the flour mixture and stir everything with a wooden spoon until everything is well mixed. Pour the batter into the paper cases and spread the rhubarb cubes on top.

Knead the dough ingredients for the crumbles and sprinkle on the muffins.

Bake the muffins at 180 ° C - fan-assisted - for approx. 25 minutes. Don't forget to TEST THE STICK. After baking, let the muffins rest in the baking tray for another 5 minutes, then leave to cool completely on a wire rack.