Beat mayonnaise, cream cheese, and ranch seasoning in a bowl until smooth.
Spread the ranch mixture into the bottom of a 9-inch dish and top with grated pepper jack cheese.
*If serving hot. Cook in a 350°F oven until hot and the pepper jack is melted. Remove from the oven and allow to cool a little before adding the toppings
Top the ranch mixture with lettuce, tomatoes, bacon and sliced green onions.