Preheat the oven to 400 degrees.
Stir together the flour, oats, sugar, tea, baking powder and salt in a large bowl.
Cut in the butter until the size of peas.
Stir in the buttermilk with a fork.
Gather up the dough on put on a floured surface.
Roll the dough to a ½" thick round
Cut into circles with a 3" cutter and place rounds on a baking sheet.
Brush each round with additional buttermilk and sprinkle with topping mixture.
Bake for 12 to 15 minutes or until browned