Tuna and Mashed Potato Casserole: Comfort Food with a Savory Twist

Serving: This casserole makes a perfect main dish, but you can serve it with a side of vegetables or a crisp salad to round out the meal.
Storage: Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or microwave until warmed through.
Variants:

Vegetable Add-ins: You can add more vegetables such as corn, carrots, or bell peppers to the filling for added nutrition and flavor.
Cheese Variations: Swap out the cheddar for mozzarella, Parmesan, or a blend of your favorite cheeses for a different taste.
Spicy Kick: Add a dash of hot sauce or some diced jalapeños to the tuna mixture for a spicy twist.
FAQ:

Can I use fresh potatoes instead of pre-made mashed potatoes?
Yes! You can use fresh potatoes. Simply boil and mash them with butter, milk, and seasoning before mixing them into the casserole.

Can I freeze this casserole?
Yes, you can freeze the casserole before or after baking. Just wrap it tightly with plastic wrap and aluminum foil, and store it in the freezer for up to 3 months. To reheat, bake at 350°F (175°C) for about 30-40 minutes.

Can I make this casserole without peas?
Absolutely! The peas are optional. You can skip them or substitute with another vegetable, like spinach or broccoli, if you prefer.

How can I make this casserole more flavorful?
Try adding a teaspoon of mustard or a dash of Worcestershire sauce to the filling for a bit of tang. You can also sprinkle some breadcrumbs on top for extra crunch.