Tuna Stuffed Mushrooms are a delicious and healthy appetizer. The mushrooms are filled with a flavorful mixture of tuna, breadcrumbs, herbs, and spices, then baked until golden and crispy. These stuffed mushrooms are perfect for parties or as a light snack. They are easy to make and can be prepared in advance. Serve them hot with a squeeze of lemon juice for a burst of freshness.