This Slow Cooker 5-Ingredient Tuna Noodle Casserole is the kind of cozy, no-fuss dinner that feels like a hug at the end of a long day. A Midwest classic for generations, tuna noodle casserole has always been about stretching pantry staples into a filling, comforting meal the whole family loves.
This modern slow-cooker version keeps all the creamy, familiar flavor—without extra steps or a sink full of dishes. Just mix, set it, and let it cook while you handle homework, chores, or simply relax. It’s warm, nostalgic, and wonderfully simple.
Ingredients
-
12 oz wide egg noodles, uncooked
-
2 cans (10.5 oz each) cream of mushroom soup
-
2 cups milk (whole or 2%)
-
2 cans (5 oz each) tuna in water, drained and flaked
-
1 cup shredded cheddar cheese
-
Salt and black pepper, to taste (optional)
-
Nonstick cooking spray or butter, for greasing
Optional: Extra shredded cheddar cheese for topping
Instructions
Step 1: Prepare the Slow Cooker
Lightly grease the inside of your slow cooker with nonstick spray or butter to prevent sticking.
Step 2: Make the Sauce
In a large mixing bowl, whisk together the cream of mushroom soup and milk until smooth.
Stir in the drained tuna, breaking it into smaller flakes. Season lightly with salt and black pepper if desired.
Step 3: Add Noodles and Cheese
Add the uncooked egg noodles and shredded cheddar cheese to the bowl. Gently stir until the noodles are evenly coated.
Step 4: Cook
Pour the mixture into the prepared slow cooker and spread evenly. Sprinkle extra cheese on top if desired.
Cover and cook on LOW for 2–3 hours, until the noodles are tender but not mushy. Gently stir once halfway through to prevent clumping.
Step 5: Rest and Serve
Once hot and bubbly, taste and adjust seasoning if needed. Let the casserole rest, covered, for 5–10 minutes to thicken slightly before serving.
Serve warm directly from the slow cooker.
Serving Suggestions
This casserole is hearty enough to stand alone, but pairs well with:
-
A crisp green salad with ranch or Italian dressing
-
Steamed green beans, peas, or mixed vegetables
-
Warm dinner rolls or buttered toast
-
Fresh fruit like sliced apples or grapes
Tips & Variations
-
Use medium or wide egg noodles for best texture
-
Stir gently—over-stirring can break noodles
-
Add frozen peas at the halfway mark if desired
-
Swap cheddar for Colby-Jack or American cheese
-
For extra creaminess, add ¼ cup sour cream
Storage & Reheating
-
Refrigerate leftovers in an airtight container for up to 3 days
-
Reheat gently in the microwave or slow cooker with a splash of milk
Final Thoughts
This 5-ingredient slow cooker tuna noodle casserole proves that comfort food doesn’t have to be complicated. Creamy, filling, and deeply nostalgic, it’s the kind of recipe you’ll come back to again and again when you need something easy, warm, and familiar.