This is a great way to serve tuna from a can. The more horseradish, the spicier. Delicious quick lunch or dinner!
Combine the drained tuna, mayonnaise, horseradish sauce, and pickles in a small bowl until evenly mixed. Place a slice of Swiss cheese onto 2 slices of bread, and top with a leaf of lettuce. Spread the tuna mixture onto the lettuce leaves. Top with the tomato and red onion slices, and finish with the remaining slices of bread.
Per Serving: 529 calories; protein 28.3g; carbohydrates 30.2g; fat 32.7g; cholesterol 56.9mg; sodium 645.3mg.