Rock Lobster Tails with Sweet Mustard Glaze Recipe
This rock lobster tails with sweet mustard glaze recipe delivers tender, buttery lobster finished with a rich, caramelized glaze made from molasses, mustard, and spices. Featured on Fish the Dish, this elevated seafood dish transforms simple lobster tails into a bold, restaurant-quality entrée with deep sweet-and-savory complexity and a glossy finish.
The Inspiration
Rock lobster tails are often considered one of the most luxurious seafood ingredients, prized for their firm texture and naturally sweet, delicate meat. Unlike more delicate shellfish, rock lobster holds its structure beautifully during cooking, making it ideal for bold glazing techniques and high-heat finishing.
This recipe draws inspiration from classic American-style barbecue sauces, where sweetness, acidity, and heat are carefully balanced to create a sticky, flavorful glaze. By combining molasses, ketchup, mustard, and Worcestershire sauce, this dish builds layers of flavour that cling beautifully to the lobster meat, enhancing rather than masking its natural sweetness.
On Fish the Dish, Spencer Watts is known for taking premium seafood and pairing it with unexpected flavour profiles that push beyond traditional preparation methods. This recipe reflects that approach by treating lobster almost like a barbecue centerpiece rather than a delicate seafood dish. The glaze behaves like a finishing sauce and a caramelized coating, creating a glossy exterior that locks in moisture and intensifies flavour.
Ingredients
Sweet Mustard Glaze
- 1 white onion, diced
- 3 cloves garlic, minced
- ¼ cup (60ml) molasses
- ½ cup (120ml) Ketchup
- 3 tablespoons (45ml) yellow mustard
- 1 teaspoon (5ml) hot sauce
- 1 teaspoon (5ml) Worcestershire sauce
- 2 tablespoons (30ml) canola oil
Method
- Heat oil in sauce pan over medium-high heat, and add onions and garlic. Cook for 2-3 minutes.
- Add molasses, ketchup, mustard, hot sauce and Worcestershire sauce. Bring to a light boil, and simmer for 3-4 minutes.
- Transfer to a food processor, and blend until sauce is smooth.
- Remove and place in refrigerator to cool.
Ingredients
Rock Lobster Tails
- 4 rock lobster tails (4-5 ounces each or 120-150 grams each)
- 4 skewer sticks
- Sweet Mustard Glaze
Method
- Preheat oven to High Broil.
- Place a skewer through the flesh of the lobster tail, from the flesh to the tail end.
- Bring large pot of salted water to a boil.
- Cook lobster in the boiling water for 5-6 minutes.
- Remove and put lobster tails in ice water to cool.
- The skewer will have helped keep the lobster tails flat.
- Remove the skewers from the lobster tails.
- Using a pair of scissors, cut 2 lines down the bottom of the tail and rip away the shell.
- Once that is done you can remove the lobster tail from the shell in one piece.
- Place lobster tails on a baking tray with parchment paper.
- Brush Sweet Mustard Glaze on the lobster tails.
- Cook lobster tails in preheated oven for 3-4 minutes, until the sauce is caramelized.
- Remove from oven, slice lobster tails in medallions and serve immediately.
- Serve with Succotash. See recipe.
Serving Suggestions
These rock lobster tails with sweet mustard glaze are best served as a refined main course for special occasions, dinner parties, or elevated seafood experiences. The rich, caramelized glaze pairs beautifully with simple, clean side dishes that balance its bold sweetness and tang.
A natural pairing is succotash, which complements the lobster with its mix of corn, beans, and vegetables, offering freshness and texture alongside the rich seafood. Lightly seasoned rice, buttery mashed potatoes, or roasted root vegetables also work well to absorb the extra glaze and round out the plate.
For presentation, arrange lobster medallions neatly on a warm plate and spoon extra glaze over top for shine and flavour intensity. A garnish of fresh herbs such as chives or parsley can add colour contrast and freshness. Lemon wedges on the side help cut through the richness and brighten each bite.
Final Thoughts
This rock lobster tails with sweet mustard glaze recipe is a bold, luxurious interpretation of classic seafood cooking, transforming premium lobster into a deeply flavourful, caramelized entrée. The combination of molasses sweetness, mustard sharpness, and subtle heat creates a glaze that is both complex and addictive.
What makes this dish truly stand out is its contrast of textures and flavours—the tender, delicate lobster meat against the sticky, glossy glaze, finished with a slight char from the broiler. It’s a recipe that feels indulgent yet balanced, refined yet comforting.