1 medium bulb garlic, end cut off, 1 clove reserved
1 tablespoon extra-virgin olive oil, plus some for drizzling
1 cup walnut halves, toasted
1 1/2 cups feta cheese, crumbles
1/2 cup milk
1 teaspoon dried oregano
1/4 cup flat-leaf parsley, a handful of leaves
Freshly ground black pepper
1/2 teaspoon crushed red pepper flakes
1 large clove garlic, reserved from above, cracked away from skin
4 flat breads or pitas, cut into wedges and toasted