According to Eat This, Not That, for the first time ever Taco Bell is making moves into Birria territory! The Grilled Cheese Dipping Taco will make its menu debut on August 3! Inspired by quesabirria, the treat includes braised beef and a three-cheese blend in a taco grilled on the outside. The Grilled Cheese Dipping Taco will be served with warm nacho cheese and red sauce. A single Grilled Cheese Dipping Taco will be available for $3.49.