Creamy Tuna Noodle Casserole is a classic comfort dish that’s both hearty and satisfying. It combines tender egg noodles, flaky tuna, and a rich, creamy sauce all baked together with a crispy topping that adds just the right crunch. This casserole is warming and simple, perfect for when you want a homey meal without much fuss.
I love making this casserole when I want something that feels like a warm hug on a plate. The creamy sauce pulls everything together, and the crunchy topping always gets everyone’s attention. One tip I always follow is to use a little bit of cheese in the sauce for an extra layer of flavor—it really makes the dish shine without being too heavy.
For serving, I often pair this casserole with a fresh green salad or steamed veggies to add some brightness to the meal. It’s also great because it makes enough to enjoy for leftovers the next day, which somehow taste just as good, if not better. Whenever I make Creamy Tuna Noodle Casserole, it reminds me of cozy family dinners and simple, satisfying food that everyone seems to love.
Key Ingredients & Substitutions
Egg Noodles: These give the casserole its soft and tender texture. You can swap them for any pasta like rotini, shells, or even macaroni if preferred.
Tuna: Canned tuna in water keeps the dish light. For a different flavor, use canned salmon or cooked shredded chicken instead.
Milk & Sour Cream: These create the creamy sauce. Use milk alternatives like almond or oat milk for dairy-free options, and replace sour cream with plain yogurt or a dairy-free substitute.
Cheddar Cheese: Adds richness, but it’s optional. Try mozzarella or a mild gouda if you want a milder taste.
Panko Breadcrumbs: The crunchy topping is key. Regular breadcrumbs work as well, or crushed crackers for a different crunch.
How Do I Make a Smooth, Creamy Sauce Without Lumps?
Making the sauce can be tricky if you don’t mix it right. Here’s how I make sure it’s creamy:
- Start with melting butter and whisk in the flour over medium heat to make a roux. Stir constantly to cook out the raw flour taste.
- Slowly add milk bit by bit while whisking nonstop. This prevents lumps from forming.
- Keep cooking and stirring until the sauce thickens nicely and coats the back of a spoon.
- Remove from heat before adding sour cream or cheese to avoid curdling.
Patience here really helps. Stirring often while slowly adding liquid is the trick to that smooth, creamy texture perfect for coating the noodles and tuna.
Equipment You’ll Need
- Large pot – to boil the egg noodles easily without crowding them.
- Medium saucepan – perfect for making the creamy sauce with space to whisk smoothly.
- Whisk – helps keep the sauce lump-free and smooth.
- 9×13-inch baking dish or oven-safe skillet – big enough to bake the casserole evenly.
- Spoon or spatula – for mixing the noodles and sauce together gently.
Flavor Variations & Add-Ins
- Swap tuna for canned salmon or shredded cooked chicken for a change in protein.
- Add mushrooms or chopped bell peppers for extra veggies and flavor.
- Mix in a handful of shredded mozzarella or Parmesan instead of cheddar for a different cheese taste.
- Stir in some cooked bacon bits for a smoky crunch that pairs well with the creamy sauce.
How to Make Creamy Tuna Noodle Casserole
Ingredients You’ll Need:
Main Ingredients:
- 8 oz egg noodles
- 2 tablespoons butter
- 2 tablespoons all-purpose flour
- 1 ½ cups milk (whole or 2%)
- ½ cup sour cream
- 1 cup shredded cheddar cheese (optional for extra creaminess)
- 1 teaspoon Dijon mustard (optional)
- Salt and black pepper, to taste
- 2 cans (5 oz each) tuna in water, drained and flaked
- 1 cup frozen peas, thawed
- ½ cup finely chopped onion (optional)
- 1 cup breadcrumbs (preferably panko for crunch)
- 2 tablespoons butter, melted (for topping)
- Fresh parsley, chopped (for garnish)
How Much Time Will You Need?
This casserole takes about 15 minutes to prepare, including boiling noodles and making the sauce. Then, it bakes in the oven for 25-30 minutes until bubbly and golden. So, all together, plan on about 45 minutes from start to finish.
Step-by-Step Instructions:
1. Prepare the Noodles and Oven:
Preheat your oven to 350°F (175°C). While it heats, cook the egg noodles according to package directions until just tender (al dente). Drain the noodles and set them aside.
2. Make the Creamy Sauce:
In a large saucepan, melt 2 tablespoons of butter over medium heat. If using onion, add it now and cook until soft, about 3-4 minutes. Stir in the flour and cook, whisking constantly, for about 1 minute to form a roux. Slowly whisk in the milk, continuing to stir until the sauce thickens and bubbles gently (around 5-7 minutes). Remove from heat, then mix in the sour cream, cheddar cheese (if using), Dijon mustard, salt, and pepper until smooth.
3. Combine and Bake:
Add the drained tuna and thawed peas to the sauce, stirring just until mixed. Fold in the cooked noodles, coating them evenly. Transfer everything to your greased baking dish or oven-safe skillet. Mix the melted butter with the breadcrumbs and sprinkle this topping evenly over the casserole. Bake uncovered for 25-30 minutes until the top is golden and the casserole is bubbling. Once done, sprinkle chopped parsley on top for a fresh finish and serve warm.
Can I Use Frozen Peas Directly in the Casserole?
It’s best to thaw frozen peas before adding them to the sauce to ensure even cooking and to prevent excess moisture. Simply leave them out at room temperature for a few minutes or rinse under warm water and drain well.
Can I Substitute the Tuna with Another Protein?
Absolutely! Cooked shredded chicken or canned salmon both work wonderfully as substitutes. Just make sure to drain any canned fish well to avoid a watery casserole.
How Should I Store Leftovers?
Store leftovers in an airtight container in the fridge for up to 3 days. Reheat gently in the oven or microwave, adding a splash of milk if the sauce has thickened too much.
Can I Prepare This Casserole Ahead of Time?
Yes! Assemble the casserole and cover it with foil, then refrigerate for up to 24 hours before baking. When ready, bake a few extra minutes to ensure it’s heated through and bubbly.
