Try this Cream Cheese dip recipe
Ingredient lists omit the physical behavior of dairy fats under sustained heat. Sour cream contains moisture that separates if subjected to thermal shock, meaning cold dairy straight from the refrigerator will curdle upon contact with a 400 degree oven. Bringing the components to room temperature prevents this phase separation. Adapting this dish for different guest counts requires proportional adjustments. Doubling the batch necessitates a wider 2-quart baking dish rather than a deeper one to maintain the proper depth-to-surface ratio for even browning. Conversely, halving the recipe reduces the required thermal window; smaller volumes reach bubbling point within 18 minutes.
Leftovers keep in a sealed container for up to three days. Reheat gently in a 350 degree oven until warmed through rather than using a microwave, which breaks the emulsion.