My Tuna Grilled Cheese Sandwich recipe boasts mouthwatering, flaky tuna with shredded cheddar, crisp bacon and fresh tomatoes, all grilled to perfection on buttery bread!
Arrange tomato slices on a cutting board or plate, and sprinkle with salt; let stand 15 minutes.
In the meantime, combine tuna, cheddar, basil, thyme, and red onions in a mixing bowl; stir to incorporate.
Brush the outside of each slice of bread with butter and sprinkle the buttered side with parmesan cheese; press to adhere to the bread.
On the inside of two bread slices evenly divide a layer of the cheese mixture, tomatoes, and bacon.
Top with remaining bread slices, buttered side on the outside.
Heat olive oil in a skillet set over medium heat.
Place sandwiches in the skillet and cook over medium heat for 3 to 4 minutes per side, or until golden brown, firmly pressing down on the sandwich with a spatula before flipping over the sandwich to cook on the other side.