Preheat oven to 400°F. Slice bread at an angle, almost all the way through. Space slices 1 inch apart.
Mix butter and taco seasoning, then spread between the slices of each bread (both sides).
Cross bread in the opposite direction, with 1 inch spaces. Push 1/2 c. shredded cheese in between each crevice.
Stuff spoonfuls of chili between the slices.
Place the bread on a large sheet of aluminum foil on a baking sheet.
Top with the remaining cheese, making sure to stuff between every crevice.
Wrap with the aluminum foil. Place in the oven for 15 minutes.
Uncover and cook for 5 minutes more, until all of the cheese has melted.
Garnish with fresh cilantro and serve with a side of heated chili for additional dipping.