There’s something genuinely comforting about pulling a bubbling Tuna Casserole out of the oven on a weeknight. This dish checks every box — it’s affordable, endlessly satisfying, and comes together with pantry staples you probably already have.
The golden cheese crust on top, the creamy noodles underneath, and that irresistible crunch from the potato chips make it a recipe that earns a permanent spot in your rotation. It’s the kind of dinner that feels like home, no matter how many times you’ve made it.
Table of Contents
Why We Love the Best Tuna Casserole Recipe
- Takes less than 30 minutes of active prep time
- Uses simple, budget-friendly ingredients that feed the whole family
- Delivers creamy, cheesy, and crunchy in every single bite
- Reheats beautifully — lunch tomorrow is already handled
Ingredient notes
- Egg noodles — Wide and sturdy, they hold up well during baking.
- Egg noodles — Wide and sturdy, they hold up well during baking. Cook just to al dente so they don’t go mushy in the oven.
- Condensed cream of mushroom soup — Use straight from the can. It acts as both the sauce and seasoning for the filling.
- Shredded cheddar cheese, divided — Split between the filling and the topping. Sharp cheddar gives the boldest flavor.
- Tuna, drained — Chunk light in water works great. Drain thoroughly so the casserole doesn’t turn watery.
- Frozen green peas — No need to thaw. They cook through in the oven and add a pop of color to the filling.
- Sliced mushrooms — Adds earthy depth without extra prep. Drain well before adding.
- Chopped onion — Gives the casserole a quiet savory backbone. Dice small so it blends into every bite.
- Crushed potato chips — The crunchy topping that makes this casserole stand out. Crush into rough pieces, not fine crumbs.
How To Make It
Step 1: Gather and prepare all of your ingredients.
Step 2: Bring a large pot of lightly salted water to a boil. Add the egg noodles and cook until tender but still slightly firm, about 7–9 minutes. Drain well and set aside. Meanwhile, preheat the oven to 425°F (220°C).
Step 3: In a large mixing bowl, combine the cooked noodles, condensed soup, 1 cup of shredded cheese, tuna, peas, mushrooms, and onion. Stir until everything is evenly coated.
Step 4: Spread the mixture evenly into a 9×13-inch baking dish.
Step 5: Sprinkle the crushed potato chips over the top, then finish with the remaining 1 cup of shredded cheese.
Step 6: Bake for 15–20 minutes, or until the cheese is melted and bubbly and the edges are lightly golden brown.
Step 7: Remove from the oven and serve hot. Enjoy!
Recipe Notes
Topping swaps: If you don’t have potato chips, crushed butter crackers, cornflakes, or crispy fried onions all make excellent alternatives — each one brings its own character to the crust.
What to serve alongside: This casserole pairs really well with simple steamed or roasted vegetables. Broccoli, green beans, or roasted Brussels sprouts are all great options that balance the richness of the dish.
Storing leftovers
- Cool completely before covering or transferring to a container
- Refrigerate in an airtight container for up to 3 days
- Oven reheat — Cover with foil and warm at 350°F for about 15 minutes
- Microwave reheat — Heat individual portions in 60-second intervals until warmed through
- Chip topping tip — The chips will soften after storing; add a fresh sprinkle before reheating to bring the crunch back
- Freezing — Freeze before adding the chip topping, wrap tightly and freeze up to 2 months; thaw overnight in the fridge before baking
Best Tuna Casserole
Ingredients
- 3 cups Wide egg noodles Cook al dente; they continue softening in the oven
- 1 can (10.5 oz) Condensed cream of mushroom soup Use straight from the can, do not dilute
- 2 cups Shredded sharp cheddar cheese Divided — 1 cup for filling, 1 cup for topping
- 2 cans (5 oz each) Chunk light tuna in water Drained thoroughly
- 1 cup Frozen green peas No need to thaw beforehand
- ½ can (4.5 oz) Sliced mushrooms Drained
- ¼ cup Yellow onion Finely chopped
- 1 cup Potato chips Crushed into rough pieces
Instructions
- Gather and prep all ingredients — measure peas, drain tuna and mushrooms, crush chips, chop onion, and shred cheese if not pre-shredded.2. Bring a large pot of salted water to a boil. Add egg noodles and cook for 7–9 minutes until just barely tender. Drain well and set aside. Preheat oven to 425°F (220°C).3. In a large mixing bowl, combine the cooked noodles, condensed soup, 1 cup of shredded cheese, tuna, peas, mushrooms, and chopped onion. Stir until everything is evenly coated.4. Transfer the mixture to a lightly greased 9×13-inch baking dish and spread into an even layer.5. Scatter the crushed potato chips evenly over the top, then sprinkle the remaining 1 cup of shredded cheese over the chips.6. Bake uncovered for 15–20 minutes, until the cheese is fully melted, bubbly, and lightly golden around the edges.7. Remove from the oven, let rest for 2–3 minutes, and serve hot.
Notes
- Topping swaps: No potato chips? Crushed butter crackers, cornflakes, or crispy fried onions all work beautifully as alternatives.
- Serving suggestion: Pairs well with steamed broccoli, roasted green beans, or Brussels sprouts to balance the richness.
- Make ahead: Assemble through Step 4, cover, and refrigerate up to 24 hours. Add the chip and cheese topping right before baking.
- Storing leftovers: Cool completely, then store in an airtight container in the refrigerator for up to 3 days. Reheat in a 350°F oven covered with foil for 15 minutes, or microwave in 60-second intervals. Add fresh chips before reheating to restore crunch.
- Freezing: Freeze before adding the topping, wrapped tightly, for up to 2 months. Thaw overnight in the refrigerator before baking as directed.
Nutrition (per serving)
- Calories: 595
- Total Carbohydrate: 58g
- Dietary Fiber: 4g
- Total Sugars: 5g
- Protein: 32g
- Total Fat: 26g
- Saturated Fat: 12g
- Cholesterol: 99mg
- Vitamin C: 7mg
- Sodium: 1061mg
- Calcium: 319mg
- Iron: 5mg
- Potassium: 602mg
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