Photo of Grilled Tuna with Mustard-Dill Sauce by WW

Grilled Tuna with Mustard-Dill Sauce

Total Time
27 min
15 min
12 min
Yellowfin tuna, excellent for grilling, is available all year long but is most plentiful during the summer months.


Uncooked bluefin tuna

1¼ pound(s), four 5 oz fillets cut about 1 1/4-inch thick

Olive oil cooking spray

4 spray(s), or enough to coat fish

Table salt

½ tsp(s), or to taste

Black pepper

¼ pinch(es), or to taste

Salted butter

1 tbsp(s)


2 small, or 1 large, chopped

Fat free creamer

1 cup(s), such as fat-free 1/2 and 1/2


4 tsp(s), grainy

Fresh dill

1 tbsp(s), fresh, chopped

Lemon zest

1 tbsp(s)


  1. Preheat grill to medium. Coat tuna with olive oil cooking spray; sprinkle with 1/4 teaspoon of salt and 1/8 teaspoon of pepper, or to taste. Grill 4 to 6 minutes per side, until desired degree of doneness.
  2. Meanwhile, brown butter in a small saucepan over medium-high heat. Add shallots and cook until they begin to brown, about 1 minute. Reduce heat to medium and add half & half; cook until slightly thickened and mixture coats the back of a spoon, about 5 minutes. Stir in mustard; remove from heat and stir in dill, zest, 1/4 teaspoon of salt and 1/8 teaspoon of pepper.
  3. Serve sauce hot or at room temperature. Yields 1 tuna fillet and about 2 tablespoons of sauce per serving.