Taco Bell says it's expanding its small test of waffle tacos, as it prepares to take its breakfast menu national sometime next year. The waffle taco, which includes scrambled eggs, sausage and a side of syrup, was the top seller during breakfast hours at the five Southern California restaurants where they were tested earlier this year. Now the company wants to see how it would fare on a bigger scale; the waffle tacos and a full breakfast menu will be expanded to about 100 restaurants in Fresno, California; Omaha, Nebraska; and Chattanooga, Tennessee, starting Thursday.