01 - In a large skillet over medium heat, cook the ground beef until browned, about 5 minutes. Drain excess fat if needed.
02 - Add onion, garlic, and jalapeño to the skillet. Sauté until softened, about 3 minutes.
03 - Stir in chili powder, cumin, smoked paprika, salt, and black pepper. Cook for 1 minute until fragrant. Remove from heat and set aside.
04 - In a large saucepan over medium-low heat, combine processed cheese, milk, and cheddar cheese. Stir frequently until melted and smooth.
05 - Add the diced tomatoes with green chilies with their juices and cayenne pepper to the cheese sauce. Stir well.
06 - Fold in the cooked beef mixture. Simmer gently for 3–5 minutes, stirring occasionally, until heated through.
07 - Remove from heat and stir in sour cream until well blended.
08 - Transfer to a serving bowl or slow cooker to keep warm. Garnish with cilantro and green onions if desired. Serve hot with tortilla chips.