Cut off pointed end of garlic bulb; place garlic on a piece of aluminum foil, and drizzle with 1 tablespoon oil. Fold foil to seal.
Bake at 425° for 30 minutes; cool. Squeeze pulp from garlic.
Process garlic pulp, 2 tablespoons oil, beans, and next 4 ingredients in a food processor until smooth. Add half of cheese, and pulse 5 to 6 times or until combined.
Cut bread, at a diagonal, into 24 (1/4-inch) slices. Arrange on a baking sheet; brush evenly with remaining 2 tablespoons oil.
Spread 2 tablespoons bean mixture on 1 side of each bread slice, and sprinkle with remaining feta cheese.
Bake at 350° for 5 to 7 minutes.
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