Classic potato skins are stuffed with juicy ground beef, sour cream, jalapenos, and other taco-inspired toppings for a satisfying snack sure to please everyone at your game-day party.
Preheat oven to 400 degrees. Line a baking sheet with parchment paper.
Place potatoes on prepared baking sheet. Transfer to oven and roast until easily pierced with the tip of a sharp knife, 55 to 60 minutes. Remove from oven and let cool slightly, about 10 minutes.
Halve potatoes lengthwise. Using a small spoon, gently scoop out all but 1/2 inch potato into a medium bowl; set skins aside. Add sour cream, butter, and milk to bowl with potato; season with salt and pepper. Using a potato masher, mash until smooth and combined. Set aside.
Heat olive oil in a large skillet over medium heat. Add onions and jalapenos and cook, stirring, until soft and translucent, 3 to 5 minutes. Add beef and stir to combine. Continue to cook, stirring often, until beef is cooked through, about 10 minutes. Stir in chile powder, cayenne, cumin, 2 teaspoons salt, and 1 chopped tomato. Remove from heat and fold beef mixture into mashed potato mixture along with 1 cup cheese and chives; season with salt and pepper.
Spoon potato and meat mixture into hollowed-out potato skins and place on a parchment paper-lined baking sheet. Sprinkle potato skins with remaining 1 cup cheese and transfer to oven; bake until cheese is melted and potatoes are hot, about 20 minutes. Serve topped with sour cream, remaining chopped tomato, chives, bacon, pickled jalapenos, and cilantro.