2.In medium heatproof bowl, cover beans with boiling water; stand 5 minutes, drain. Remove and discard skins.
3.Process beans, chickpeas, garlic, onion, spices and herbs until combined. Shape level tablespoons of mixture into patties; roll patties in polenta, place on oiled oven tray. Spray patties lightly with cooking-oil spray. Bake about 40 minutes.
4.Using a vegetable peeler, cut cucumber into ribbons lengthways. Divide lettuce, cucumber, felafel, tabbouleh and yogurt sauce among breads; roll up to enclose filling.
Tabbouleh
5.In small heatproof bowl, cover burghul with boiling water; stand 10 minutes, drain. Pat dry with absorbent paper. Combine burghul with remaining ingredients in medium bowl.