Step 1 Trim the crust from the loaves and cut the bread into 1/3-inch cubes. Set aside.
Step 2 In a large skillet heated over medium heat, add the olive oil. Stir in the garlic and cook, stirring until fragrant, 1 to 2 minutes. Add the bread cubes (this may be done in batches if necessary), stirring to evenly coat with the oil. Season with the Old Bay, pepper and garlic salt. Remove from heat and spread on a parchment-lined rimmed baking sheet, removing and discarding the garlic cloves.
Step 3Set aside in a cool dry place overnight to dry out.