Step 1: Prepare the Spinach - If you're using fresh baby spinach, wash it thoroughly and chop it into smaller pieces. If you're using frozen spinach, make sure it's thawed completely and squeeze out any excess water.
Step 2: Mix the Base - In a large mixing bowl, combine the sour cream and mayonnaise. Stir until the mixture is smooth and well combined.
Step 3: Add the Flavor - Sprinkle in the packet of Lipton or Knorr's Vegetable Recipe Mix. Mix well to incorporate the seasoning throughout the creamy base.
Step 4: Combine the Ingredients - Add the chopped spinach, water chestnuts, and green onions (if using) to the bowl. Gently fold the ingredients together until everything is evenly distributed.
Step 5: Chill and Serve - Cover the bowl with plastic wrap and refrigerate the spinach dip for at least an hour before serving.