Using a knife, cut the tops off the two heads of garlic. Put the garlic inside tinfoil wrap, drizzle with some olive oil and the close the foil completely. Bake at 400 degrees for about 45 minutes or until a fork mashed on top of the garlic smashes it.
Open the tinfoil and allow the garlic to cool. Mash the garlic up with a fork.
Crisp the bacon and crumble using a food processor so the bacon is finely chopped.
In a large bowl, mix the sour cream and mayonnaise together well. Add the finely chopped green onions, the finely chopped bacon, mashed roasted garlic and blend together.
Mix in the Worcestershire sauce, the salt and the pepper.