Mix the dry spices: In a small bowl, combine allspice, brown sugar, thyme, cinnamon, nutmeg, smoked paprika, salt, black pepper, and cayenne.
Add aromatics: Stir in minced garlic, grated onion, and scotch bonnet peppers (if using). Mix until fully combined.
Blend (optional): For a finer texture, pulse the mixture in a food processor until smooth.
Season your meat or veggies: Rub the jerk seasoning generously over chicken, beef, pork, or vegetables. Let it sit for at least 30 minutes—or overnight for deeper flavor.
Cook as desired: Grill, bake, or pan-sear your seasoned meat until cooked through. Serve with lime wedges or your favorite sides.