Tasty Tuna Melt, No Mayo - cooking recipe

Ingredients

1/3 cup minced onion
2 tablespoons lime juice (squeezed from one fresh lime is best)
1 (6 ounce) can solid white tuna packed in water, well drained
1 tablespoon minced fresh parsley
1/4 lb cheddar cheese
4 slices whole wheat bread
1 tablespoon butter (optional)
1 ripe tomatoes, sliced (optional)
1 avocado, sliced (optional)
hot sauce (optional)

Preparation

Lightly toast the bread slices in a toaster.
Combine the onions, parsley, and tuna in mixing bowl. You can add hot sauce or other spices if you want to jazz it up.
Add the lime juice to the bowl and mix it all up with a fork. You can substitute lemon juice for lime juice if needed.
Place the bread on a baking sheet. Cover each slice with the tuna mixture.
Cut the cheese into slices and then cover each sandwich with a thin layer of cheese.
Place the sandwiches under the broiler for 3 to 4 minutes, or until the cheese is melted and bubbling a bit.
(Optional) You can also add a fresh slice of tomato or avocado to each sandwich and then broil for 1 or 2 more minutes. (If you broil much longer than that the tomato or avocado can get mushy).
(Optional) If you like a firmer sandwich, melt a tablespoon of butter in a skillet and then transfer the cooked sandwiches to the skillet. Cook on medium heat for about 2 minutes, until the bottom of the bread is buttery and firm.
Serve them while they're hot.