Breakfast tacos can be easily customized with vegetarian or vegan fillings. Here are some ideas for plant-based options: Replace scrambled eggs with seasoned and crumbled tofu sautéed with spices like turmeric, cumin, and nutritional yeast, sautéed mushrooms and wilted spinach create a delicious and nutritious filling, or Replace traditional sausage with plant-based breakfast sausage patties or crumbles for a savory and protein-packed filling.