Preheat Oven to 375ºF and lightly grease a standard muffin pan or line with paper muffin cups.
In a medium pot bring water and SugarRoti Chai Nu Spice package to a boil. Turn off heat and let tea steep of 15 minutes. Pour through a fine mesh strainer into a small bowl and set aside to cool (15 min).
Meanwhile, in a large mixing bowl, cream together the butter, vanilla and sugars until smooth (5 min).
Add eggs one at a time, mix to combine (5 min).
Mix together flour, baking powder and baking soda and SugarRoti Chai Tea; combine until smooth batter (5 min).
Prepare the crumble topping, chopping the chilled butter into small pieces and mixing all together with a fork (5 min).
Pour the batter into prepared muffin pan and sprinkle with crumble (we like to sprinkle a little in the bottom of each muffin to spread the goodness). Bake until pale golden-brown (12-15 min).
Remove from muffin tray to cool and enjoy.
