Prepare the Bacon: Render the diced smoked bacon in a skillet until the pieces are golden and crispy. Remove the cooked pieces and place them on a plate lined with absorbent kitchen paper to drain away excess grease. Allow the bacon to cool completely.

Whip the Base: In a large mixing bowl, combine the softened cream cheese, the cultured sour cream, the finely grated cheddar, the sliced scallions, and the powdered Ranch seasoning. Use a sturdy spoon or a hand mixer to blend all components thoroughly until the mixture is completely uniform and smooth.

Combine and Finish: Gently incorporate the cooled, crispy bacon bits into the creamy mixture, using a folding motion to distribute them evenly. Transfer the prepared dip to a serving dish and, if desired, sprinkle the surface with a few extra slices of scallion for garnish before serving.