Preheat your oven to 425°F (220°C). Wash and dice the russet potatoes into evenly sized cubes. Consistent sizing helps them cook at the same rate. Place the potatoes in a large mixing bowl. Add olive oil, chili powder, smoked paprika, garlic powder, cumin, salt, and pepper. Toss thoroughly until every piece is coated. Spread the seasoned potatoes in a single layer on a baking sheet. Avoid overcrowding because crowded potatoes tend to steam instead of crisp.
Place the baking sheet in the preheated oven. Roast the potatoes for 25 to 30 minutes until golden brown. Flip the potatoes halfway through cooking. This helps both sides develop a crispy exterior. When finished, the potatoes should be crispy on the edges and tender inside. Remove them from the oven and keep warm.
While the potatoes roast, heat a large skillet over medium-high heat. Add the ground beef and break it apart with a spoon. Cook until the meat is browned and fully cooked. Drain excess grease if necessary for a cleaner texture. Add taco seasoning and follow the package instructions, usually adding a small amount of water. Simmer until the mixture thickens and becomes flavorful.
While the beef cooks, prepare your toppings. Slice the green onions and chop the fresh cilantro. Dice any additional toppings such as tomatoes, avocado, or jalapeños. Having everything ready makes assembly quick and easy. Place the toppings in small bowls for convenient serving and customization.
Divide the crispy roasted potatoes among serving bowls. While they are still hot, sprinkle shredded cheese over the top. The heat from the potatoes helps the cheese melt beautifully. Next, add a generous portion of seasoned taco meat. Finish with sour cream, salsa, green onions, cilantro, and any additional toppings you enjoy.
Serve immediately while the potatoes are still crisp and the cheese remains melty. Allow everyone to customize their own bowl with their favorite toppings. This makes the meal fun and interactive. Enjoy the perfect combination of crispy potatoes, savory meat, creamy toppings, and fresh garnishes.