A classic tuna melt goes to the next level when it’s served on a sweet Hawaiian roll and baked in garlic butter sauce! These Tuna Melt Sliders are a convenient, make ahead lunch or easy dinner recipe that the whole family will love!
In a medium bowl, use a fork to mix the tuna, celery, mayonnaise, pickle relish, salt and pepper.
Spread tuna salad on bottom of rolls. Place ¼ slice of American cheese on each. Replace tops.
Arrange sandwiches in a single layer in a greased 8-inch-square baking pan.
In a small skillet, melt butter over medium heat. Add onion; cook and stir 1-2 minutes.
Cover with aluminum foil and refrigerate for at least 2 hours (or overnight).
Preheat oven to 350 degrees F. Bake sliders, covered, for 25 minutes.
Remove foil and bake uncovered for an additional 5 minutes or until golden brown on top.