- 1 (12 ounce) can tuna, drained
- 1/4 cup Cheddar cheese crumbles (optional)
- 8 slices jarred jalapeno pepper, diced, or more to taste
- 2 tablespoons mayonnaise, or to taste
- 1 tablespoon pickle relish
- 1 tablespoon lemon juice (optional)
- 1/2 teaspoon ground black pepper
- 8 slices bread, toasted
- Stir tuna, Cheddar cheese, diced jalapeno, mayonnaise, relish, lemon juice, and pepper together in a bowl. Spread tuna mixture on a slice of toast and top with remaining slice to make a sandwich.