Mix Everything:
In a large mixing bowl, combine sour cream, drained Rotel, taco seasoning, and shredded cheese. Stir until well blended.
Chill:
Cover and refrigerate for at least 1 hour before serving — this helps the flavors meld beautifully.
Serve:
Garnish with green onions or cilantro, and serve with tortilla chips, pita chips, or veggie sticks.