To make a delicious fajita bar, make sure to add both fajita toppings and side dishes. Start with corn and flour tortillas. Add two types of salsa, guacamole, and sour cream. Then add bowls of shredded cheese, lettuce, diced tomatoes, and cilantro. Finish the platter with beans, Mexican rice, and the fajita fillings including chicken, steak, peppers, and onions.