Brown and crumble the ground beef in a nonstick skillet. Drain off any grease and transfer the ground beef to a 3 to 4-quart slow cooker.: The moment the ground beef hits the hot skillet you will hear a satisfying sizzle and smell savory, toasty notes as the meat browns, which signals the Maillard reaction that builds flavor. While browning, break the meat into small pieces so it cooks evenly and caramelizes in places, adding complexity. Avoid crowding the pan, because if the beef steams instead of browns you lose those tasty browned bits. A common mistake is turning the meat too often; let it sit briefly so a golden crust forms, then stir. When most pieces show deep brown edges, use a slotted spoon to transfer the meat, leaving behind any excessive fat.
Add remaining ingredients. Cover and cook on LOW for 1 1/2 to 2 hours, stirring occasionally.: Drainage reduces the risk of a greasy dip and helps the cheeses emulsify properly later. Pouring meat with too much fat into the slow cooker can separate the fats from the cheese, resulting in a slick surface. After draining, transferring the meat should reveal a richer, more concentrated aroma, and the slightly crisp edges will continue to soften as they mingle with the other ingredients. One troubleshooting tip is to blot the meat briefly with a paper towel if it still seems overly greasy before adding it to the slow cooker.
Serve warm with tortilla chips.: When you add the cream cheese , Velveeta cheese , salsa , minced jalapeno , and taco seasoning into the cooker, you will notice a contrast of textures and colors. The creamy white blocks, glossy processed cheese, and red salsa create a visual cue that everything is ready to melt together. Stir gently to begin combining, as the cheeses will start to soften on contact with warm meat. The reason this step matters is the cheeses need to be nestled among the meat so heat reaches them evenly. Avoid over stirring vigorously at this early stage, which can incorporate air and make the texture less smooth.
Cover and cook on LOW for 1 1/2 to 2 hours, stirring occasionally: As the cooker warms, the cream cheese and Velveeta cheese will soften and coalesce into a glossy, creamy mass. You will see the salsa break down and the aroma of spices deepen. Stirring occasionally encourages even melting and prevents hot spots, especially near the edges. The low, gentle heat preserves a velvety texture; cooking too hot can cause separation or a grainy finish. A typical error is lifting the lid too frequently which lets heat escape and lengthens cooking time, so check just enough to stir once or twice.
Serve warm with tortilla chips: The final scoop should be thick, bubbling at the edges, and richly aromatic with a blend of cheesy and spiced notes. Serving warm keeps the texture creamy and ensures the dip clings to chips. For best results, place the slow cooker on a heatproof surface and provide sturdy dippers that hold up to the creamy weight. If the dip cools into a firmer mass, reheating gently on LOW while stirring will restore its scoopable quality. Avoid microwaving large portions because uneven heating can create hot pockets and cause the cheese to separate.