Preheat oven to 350°.
Unroll dough; cut into 3 equal pieces. Shape each portion into a rope. Place ropes on a baking sheet coated with cooking spray; (do not stretch). Braid ropes; pinch loose ends to seal. Insert garlic slices evenly into braid. Brush melted margarine over braid, and sprinkle with sesame seeds.
Bake braid at 350° for 25 minutes or until loaf sounds hollow when tapped. Remove from baking sheet immediately. Serve warm.