Add the mayonnaise, lemon juice, and mustard to a mixing bowl, and stir well.
In another bowl, combine the tuna, sweet relish, and onion.
Pour the mayonnaise mixture over the tuna mixture and stir to coat.
Season with salt and pepper.
Serve on bread slices and garnish with sliced tomatoes.
Video
Notes
Check the labels — Not all tunas are created equal, and this is even more true when it comes to canned tuna. We’d strongly suggest getting a low-sodium one, if possible. If it’s also wild-caught, go for it.
Nutrition
Nutrition Facts
Panera Tuna Salad Recipe
Amount per Serving
Calories
207
% Daily Value*
Fat
4
g
6
%
Saturated Fat
1
g
6
%
Trans Fat
0.01
g
Polyunsaturated Fat
2
g
Monounsaturated Fat
1
g
Cholesterol
32
mg
11
%
Sodium
551
mg
24
%
Potassium
251
mg
7
%
Carbohydrates
23
g
8
%
Fiber
2
g
8
%
Sugar
9
g
10
%
Protein
20
g
40
%
Vitamin A
406
IU
8
%
Vitamin C
4
mg
5
%
Calcium
58
mg
6
%
Iron
3
mg
17
%
* Percent Daily Values are based on a 2000 calorie diet.