01 - Preheat oven to 400°F. Prick each potato several times with a fork, rub with a little olive oil and sprinkle with salt. Place potatoes directly on the oven rack and bake for 60 to 70 minutes until skins are crisp and centers are tender.
02 - While potatoes bake, heat olive oil in a skillet over medium heat. Sauté diced onion until softened, about 2 to 3 minutes. Add minced garlic and cook for an additional 30 seconds.
03 - Add ground beef (or alternative) to the skillet. Cook, breaking up with a spoon, until browned and thoroughly cooked. If necessary, drain excess fat.
04 - Stir in taco seasoning and water, mixing well to combine. Simmer for 3 to 4 minutes until thickened. Adjust seasoning with salt and black pepper as needed.
05 - Once potatoes are ready, let cool slightly. Cut a lengthwise slit in each, gently fluff the interiors using a fork.
06 - Fill each potato generously with taco filling. Top with cheese, tomatoes, sour cream, black olives, avocado, green onions, cilantro, and a preferred amount of salsa or hot sauce.
07 - Serve immediately, offering additional toppings for customization.