You can drop in at a participating location and score either a Sausage or Bacon Biscuit Taco between 7 and 11 AM. They normally cost around $2.69.
The Biscuit Taco features a buttermilk biscuit folded like a taco shell and filled with either bacon or sausage plus eggs and cheese. You can find my previous review of the Biscuit Taco here.