A Hearty Baked Dish with Layers of Flavor
This Creamy Tuna and Potato Casserole is a comforting, one-dish meal that layers tender sliced potatoes, savory tuna, and a rich cheese sauce. With sautéed onions for sweetness and a golden, bubbly top—it’s perfect for weeknight dinners, potlucks, or whenever you need a warm, satisfying bite.
A nostalgic twist on classic comfort food!
Why You’ll Love This Recipe:
- 🥔 Potato Perfection: Thinly sliced and baked to soft, buttery tenderness.
- 🐟 Tuna Power: Flaked tuna adds protein and savory depth to every layer.
- 🧀 Cheesy Goodness: Cheddar or mozzarella melts into a golden, creamy crown.
- ⏱️ Quick Assembly: From prep to oven in under 15 minutes—ideal for busy cooks.
- 🎉 Great for Sharing: Perfect at family dinners, school events, or holiday tables.
Ingredients (Serves 6–8):
For the Potatoes:
- 6 medium potatoes , peeled and thinly sliced (about 4 cups – Yukon Gold or Russet work best)
- 1 tsp salt (for boiling potatoes – optional)
For the Onion Layer:
- 1 medium onion , sliced into half-rings (or shallot for milder flavor)
For the Creamy Sauce:
- 2 tbsp unsalted butter (or oil for dairy-free)
- 2 tbsp all-purpose flour (or cornstarch for gluten-free)
- 1½ cups heavy cream or whole milk (or half-and-half for extra richness)
- ½ cup chicken or vegetable broth (adds depth without heaviness)
- Salt and black pepper , to taste
For the Filling & Topping:
- 2 cans (5 oz each) drained tuna , flaked (or canned salmon for variation)
- 1 cup shredded cheddar or mozzarella cheese (or vegan cheese for dairy-free)
- Fresh parsley or chives , chopped (optional – for garnish)
Instructions:
Step 1: Boil the Potatoes
Bring a large pot of salted water to a boil.
Add thinly sliced potatoes and cook for 8–10 minutes until just tender but not mushy.
Drain and set aside while preparing the sauce.
Tip: Use a mandoline or sharp knife for even slices—ensures uniform cooking.
Step 2: Sauté the Onions
In a skillet over medium heat , melt 1 tbsp butter .
Add onion slices and cook for 5 minutes , stirring occasionally, until soft and slightly golden.
Set aside to cool slightly before mixing with tuna.
Step 3: Make the Creamy Sauce
In the same skillet, melt remaining butter over medium heat.
Whisk in flour and cook for 1–2 minutes to form a roux.
Gradually whisk in cream/milk + broth until smooth and thickened (about 3–4 minutes ).
Season with salt and pepper .
Step 4: Combine Filling
In a large bowl, mix:
- Drained tuna
- Sautéed onions
- Creamy sauce
Stir until fully incorporated and slightly thickened.
Step 5: Assemble the Casserole
Grease a 9×13-inch baking dish with butter or oil.
Layer:
- Half the potatoes
- Half the tuna mixture
Repeat layers, finishing with a final layer of potatoes.
Step 6: Top & Bake
Sprinkle cheese evenly over the top.
Cover with aluminum foil and bake at 375°F (190°C) for 25–30 minutes , or until bubbly.
Remove foil and bake 10–15 minutes longer , until golden and crisp.
Step 7: Garnish & Serve Warm
Let cool for 5–10 minutes before slicing.
Top with fresh parsley and serve warm with:
- Green beans
- Coleslaw
- Crusty bread
Each bite brings together:
- Buttery, tender potato layers
- Silky, seasoned cheese sauce
- Savory, flaky tuna pockets
- And that classic golden crust charm
Tips for Success:
- 🥣 Roux Hack: Whisk constantly when adding liquid to avoid lumps.
- 🧈 Use Cold Hands: Helps layer ingredients without sticking.
- 🧁 Cheese Swap Magic: Try Gouda, Monterey Jack, or Parmesan for different finishes.
- 🥦 Add Veggies: Stir in peas, carrots, or spinach for extra nutrition.
- ❄️ Make Ahead Magic: Assemble and refrigerate overnight—bake fresh when ready.
Serving Suggestions:
- Pair with steamed greens, roasted squash, or a crisp green salad .
- Great with beer, lemon water, or a cold glass of milk.
- Ideal for leftovers, school lunches, or casual dinners .
Nutritional Information (per serving, makes 8 – approximate):
(With regular cream and cheddar – per slice)
- Calories: ~300 kcal
- Protein: ~12g
- Carbohydrates: ~25g
- Fat: ~18g
- Fiber: ~1g
- Sugar: ~4g
This Creamy Tuna and Potato Casserole proves that simple ingredients can create something unforgettable. With its tender potatoes, savory tuna, and rich cheese sauce—it’s a must-bake for lovers of hearty, comforting dishes.
