Preheat oven to 375 degrees.
Place a bulb of garlic in aluminum foil and drizzle with olive oil. Pull the foil up around the garlic bulb, sealing it in. Roast for about one hour. Remove from oven and let cool.
(Smells so good!)
Melt 1 tablespoon of butter over low heat. Add one or two garlic cloves, cut in quarters. Let heat, nice and low, while you're getting everything else ready.
Combine 2-3 tablespoons softened butter with 1/4 cup of mayonnaise. Combine and then add the roasted garlic. (To get the garlic out, just squeeze it from the cloves.) Mix that up real good and stir in 1 cup shredded mozzarella and 1/2 cup shredded Cheddar. If you want to, right along in here you can drizzle in some of that garlic-infused melted butter.
Use cheese-butter mixture to fill the bread loaf. Using a pastry brush, brush the bread with that melted garlic butter. Wrap in the loaf in aluminum foil and freeze, refrigerate, or go ahead and bake.
To cook, preheat oven to 350 degrees and bake for about 12 minutes.
Makes enough filling for one to two one-pound loaves, depending on how generous you are with the filling.
Goes great with soup!