Preheat the oven to 375°F (190°C).
In a medium bowl, combine the olive oil, lemon juice, chopped dill, minced garlic, salt, and pepper.
Add the prawns to the bowl and toss until they are evenly coated with the marinade.
Transfer the prawns to a baking dish and spread them out in a single layer.
Bake in the preheated oven for 12-15 minutes, or until the prawns are cooked through and no longer translucent.
Serve the baked lemon-dill prawns hot, garnished with additional fresh dill if desired.