01 - Preheat the oven to 400°F.
02 - Slice the tops off the garlic heads to expose the cloves.
03 - Place each garlic head on a piece of aluminum foil. Drizzle with olive oil and sprinkle with salt and pepper.
04 - Wrap the garlic heads in foil and place on a baking sheet. Roast for 40 to 45 minutes until cloves are golden, soft, and caramelized.
05 - While the garlic roasts, slice the bread. Optionally brush slices with olive oil and toast in the oven during the last 8 to 10 minutes of garlic roasting.
06 - Remove garlic from oven and let cool slightly. Squeeze softened cloves onto bread slices. Garnish with parsley, a drizzle of olive oil, and red pepper flakes if desired. Serve warm.