How to Make It
Whisk together olive oil, lemon juice, 1 1/2 teaspoons salt, coriander, cumin, ginger, cinnamon, and pepper in a large bowl. Sprinkle poussins evenly with 1 1/2 teaspoons salt. Add poussins to marinade, turning to coat and rubbing marinade all over birds, inside and out. Cover and chill 2 hours.
About 1 hour before roasting the birds, make the stuffing: Stir together bulgur, apricots, cranberries, and remaining 1/2 teaspoon salt in a medium heatproof bowl. Bring 3/4 cup broth to a simmer in a small saucepan over medium-high. Pour hot broth over bulgur mixture. Let stand until liquid is absorbed, about 1 hour. Fluff with a fork. (The bulgur should still have a little tooth to it. It will finish cooking inside the poussins.) Add pistachios, walnuts, and parsley; stir to combine.
Preheat oven to 500°F. Remove poussins from marinade, and pat dry with paper towels. Discard marinade. Stuff poussins evenly with bulgur mixture (about 1/2 cup each). Loosely tie legs together with kitchen twine, and tuck wing tips under. Place poussins on a wire rack set inside a shallow roasting pan or rimmed baking sheet.
Roast in preheated oven until lightly browned, about 15 minutes. Decrease oven temperature to 350°F without opening oven door, and roast until poussins are golden brown, juices run clear when poussin is pierced with a knife, and stuffing temperature registers 160°F, 25 to 30 minutes.
Transfer poussins to a platter or tray; cover to keep warm. Remove wire rack from pan. Pour remaining 1/2 cup broth into pan with poussin drippings; stir and scrape bottom with a wooden spoon to loosen browned bits. Pour broth mixture into a small saucepan. Add honey and saffron, and bring to a simmer over medium-low, stirring often. Add preserved lemon peel, and simmer until syrupy, 5 to 8 minutes.
To serve, divide poussins among 4 plates. If serving Cornish hens, spoon about 1/2 cup stuffing onto each of 4 plates. Cut Cornish hens in half; divide among plates. Spoon lemon-honey glaze over birds, and garnish with mint and basil.