Dairy Free Gluten Free Tuna Noodle Casserole

Total time1 hr

Prep time20 min

Cook time40 min

Dairy Free Gluten Free Tuna Noodle Casserole

Tender gluten free noodles get tossed with flaky tuna and sweet peas, all wrapped in a savory sauce built from sautéed onion, celery, and garlic and thickened with a simple broth-and-cornstarch base seasoned with thyme. A crisp, golden breadcrumb topping bakes up over the whole thing until it's crunchy on top and bubbling underneath — classic casserole comfort in every bite. Fresh parsley scattered on at the end adds a little brightness to cut through the richness. This one bakes into a hearty, family-style dinner that holds together beautifully when you scoop it out of the dish, and it's a solid choice for a dairy free table without sacrificing that nostalgic, creamy texture everyone loves. Make it once and it's easy to see why this version earns a spot in regular dinner rotation.

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Ingredients

6 servings

For the casserole

12 oz gluten free egg noodles or gluten free wide pasta
Double Yolk Egg Noodles, Gluten Free, Medium 10 Oz Double Yolk Gluten-Free Egg Noodles, 10 oz
Beiler's Gluten-Free Egg Noodles
Taste Republic Gluten-Free Egg Noodles 16 OZ
Double Yolk Gluten-Free Wide Egg Noodles
See all
2 cans (5 oz each) tuna in water, drained
1 ½ cups frozen peas

For the sauce

3 tbsp unsalted butter
Chef's tip
Use a stick or block-style dairy-free butter - not a soft tub spread - and swap one-for-one.
1 medium yellow onion, finely diced
3 stalks celery, finely diced
3 cloves garlic, minced
3 tbsp cornstarch
2 cups chicken broth
1 cup whole milk
Chef's tip
Use plain, unsweetened soy milk, measured 1:1. It's one of the most reliable milk swaps and works in sauces, custards, and baked goods. For hot or acidic drinks, a barista-style soy milk resists curdling.
½ tsp dried thyme
½ tsp salt
¼ tsp black pepper

For the topping

1 cup gluten free breadcrumbs
2 tbsp unsalted butter, melted
Chef's tip
Use a stick or block-style dairy-free butter - not a soft tub spread - and swap one-for-one.

For serving

2 tbsp fresh parsley, chopped (optional)

Instructions

1
Preheat the oven to 375°F (190°C). Grease a 9x13-inch baking dish and set aside.
2
Bring a large pot of salted water to a boil. Cook the gluten free pasta according to package directions until just al dente — tender but with a slight resistance at the center. Drain in a colander and set aside. (Gluten free pasta continues to soften in the oven, so pull it 1–2 minutes before fully done.)

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