Dump wet, undrained canned tuna in the glass baking dish and 4 simple additions to get a dinner so savory your husband will be begging for it every week.
This easy tuna casserole is the kind of no-fuss comfort food that’s perfect for busy days when you still want something warm and satisfying. It starts with canned tuna added straight into the baking dish, then mixed with just a few simple ingredients you probably already have at home. With no pasta and minimal prep, it’s also a great low-carb option that doesn’t sacrifice flavor.
Serve it warm with sides like steamed green beans or buttered broccoli. A crisp salad with a tangy dressing can help balance the richness, and if carbs aren’t a concern, crusty bread or soft rolls are great for scooping up the creamy sauce. For a classic touch, try adding dill pickles or fresh tomato slices on the side.
🐟 5-Ingredient Tuna Casserole
📝 Ingredients
- Tuna in water — 3 cans (5 oz each), undrained
- Eggs — 3 large, beaten
- Sour cream — 1 cup (full-fat)
- Cheddar cheese — 1½ cups shredded, divided
- Garlic powder — 1 tsp
- Salt — ½ tsp (adjust to taste)
- Black pepper — ½ tsp (adjust to taste)
- Cooking spray or butter — for greasing
👩🍳 Directions
Preheat the oven
Set oven to 375°F (190°C) and lightly grease a 2-quart glass baking dish.
Add the tuna
Pour the tuna, including the liquid, directly into the dish. Break it apart and spread evenly.
Mix the base
In a bowl, whisk the eggs, then stir in the sour cream, 1 cup of shredded cheese, garlic powder, salt, and pepper until smooth.
Combine everything
Pour the mixture over the tuna, gently spreading it so it distributes evenly.
Top with cheese
Sprinkle the remaining ½ cup of cheddar over the top.
Bake
Place in the oven and bake for 25–30 minutes, until the center is set and the edges turn lightly golden.
Rest and serve
Let it sit for 5–10 minutes before serving so it firms up. Store leftovers covered in the refrigerator for up to 3 days.
Simple, hearty, and low in carbs, this casserole proves that a comforting meal doesn’t need a long ingredient list—just a few basics and a little time in the oven.
