BBQ Pulled Tuna Sandwich

½ cup sliced red onion

3 cloves garlic, diced

1 tablespoon water, or as needed

3 (5 ounce) cans tuna, drained

1 teaspoon Worcestershire sauce

1 tablespoon steak seasoning

1 cup barbeque sauce

1 tablespoon butter

4 large soft rolls, warmed

Cook and stir onion, garlic, and water in a skillet over medium heat until tender, about 5 minutes. Add tuna, Worcestershire sauce, and steak seasoning; mix briefly to combine. Add the barbeque sauce. Simmer on low heat to allow the flavors to combine, about 5 minutes.

Spread butter on soft rolls. Heap tuna mixture onto the rolls and serve.