Place the pre-cooked lobster meat in a large bowl (large chunky pieces)
Add diced celery, chopped parsely, salt & pepper, juice of half a large lemon. Mix well and set aside.
Turn oven to broil. Line a rimmed baking sheet with foil. Place opened buns on baking sheet then smear both halves of each bun with softened butter. Place on bottom rack of oven until they start to turn golden. Remove immediately.
Melt 3 sticks of salted butter then pour into lobster mixture. Combine well and fill each bun. Drizzle each lobster roll with the melted butter that pooled at the bottom of the mixing bowl and enjoy!