Apple Tuna Pasta Casserole with Cheesy Sauce
A vintage casserole combining tender macaroni, creamy cheese sauce, flaked tuna, and diced tart apples in a single baking dish. The sweet-savory profile bridges comfort food with unexpected fruit brightness. Serve as a weeknight family dinner or casual potluck contribution. This version's apple addition softens during baking, creating pockets of tartness that cut through the richness of the béchamel and processed cheese.
Ingredients
- 2 cup macaroni
- 6 tablespoon butter or margarine
- ¼ cup all-purpose flour
- 3 cup milk
- 2 cup process American cheesesharp cheddar or gruyere1:1dairy-free
yields different texture
- 2 cup tuna in water, drainedcanned salmon or cooked chicken1:1variation
works equally
- 2 cup tart apples, cored and dicedpear1:1fruit
optional
- 2 tablespoon butter or margarine, melted
- ½ cup breadcrumbs, soft
- ¾ teaspoon salt
Instructions
- 1
Cook macaroni according to package directions and drain.
- 2
Melt butter over low heat in a saucepan.
- 3
Whisk in flour and salt until combined.
- 4
Add all milk at once, stirring constantly over medium heat until thickened and bubbling.
- 5
Remove from heat and stir in cheese until completely melted.
- 6
Fold in tuna, diced apples, and cooked macaroni.
- 7
Transfer mixture to baking dish.
- 8
Combine melted butter with soft breadcrumbs and sprinkle evenly over top.
- 9
Bake until apples are tender.
Tips
Dice apples just before assembly to prevent browning; tart varieties like Granny Smith hold shape better during baking.
Use low heat when making the béchamel to avoid scorching; stir constantly to achieve smooth, lump-free sauce.
Breadcrumb topping browns best if casserole surface is slightly mounded; tent with foil if browning too quickly.
Good to Know
Cover and refrigerate up to 3 days. Reheat covered at 350F until warmed through, about 20-25 minutes.
Assemble completely in baking dish, cover tightly, and refrigerate up to 24 hours before baking. Add 10-15 minutes to bake time if baking from cold.
Serve warm directly from baking dish with a simple green salad to balance richness. Pairs with crusty bread and acidic white wine or sparkling cider.
Common Mistakes
Do not skip stirring when adding flour and milk to avoid lumps in sauce.
Do not overbake apples or they will disintegrate; 30 minutes should yield tender but intact pieces.
Do not use fresh breadcrumbs that are too moist or topping will become soggy during baking.
Substitutions
Dairy-Free Swaps
yields different texture
General Alternatives
works equally
FAQ
Can I make this dairy-free?
Substitute dairy butter with olive oil or dairy-free butter, milk with unsweetened oat or cashew milk, and process cheese with dairy-free cheddar alternative. Sauce will be thinner; reduce milk by 1/4 cup or add cornstarch slurry to thicken.
What if my apples turn to mush?
Use firmer apple varieties like Honeycrisp or Pink Lady, dice them larger, and add during final 5 minutes of stovetop cooking rather than at assembly. Alternatively, fold in pre-roasted apple pieces after baking.
How long can I keep this frozen?
Freeze unbaked casserole up to 2 months covered tightly. Bake from frozen at 350F for 50-60 minutes, covered initially, then uncovered final 15 minutes until golden and heated through.