Preheat oven to 400°F. Line a baking sheet with foil.
Place potatoes on the baking sheet, brush with 1 tablespoon olive oil, and season with ½ teaspoon salt. Bake for 60-75 minutes until fork-tender.
In a skillet, heat remaining 1 tablespoon olive oil over medium-high. Add ground beef, diced onion, salt, and pepper. Cook until beef is browned, about 5-6 minutes. Drain excess fat.
Add taco seasoning and water to the beef. Stir, bring to boil, then simmer 3-5 minutes until sauce thickens.
Remove baked potatoes from oven, cut a slit in each, and let rest 5 minutes. Carefully open and fluff the insides.
Scoop out about 1-2 tablespoons of potato from each and fill with seasoned beef.
Top with shredded cheddar, diced tomato, guacamole, sour cream, cilantro or green onion as desired.
Notes
This dish is perfect for a quick, flavorful dinner that combines baked potatoes with tasty taco toppings.