Tuna and green bean casserole

This Tuna and Green Bean Casserole blends tender green beans, buttery mushrooms, and creamy tuna with a cheesy topping, creating a comforting family dish. It's easy to prepare and ideal for potlucks or cozy dinners.

21 Apr 2026
Cook time 30 min
Prep time 20 min

Ingredients:

2 cups green beans
1/4 lb mushrooms
1 stalk celery
2 tbsp onion
2 tbsp butter
1/2 cup chicken broth
3/4 cup heavy whipping cream
1 dash salt
1 dash black pepper
2 cans canned tuna
3 cups cheddar cheese
Tuna and green bean casserole

Tuna and green bean casserole is a classic comfort food that combines the rich flavors of tuna, fresh green beans, and creamy cheese. This dish is perfect for family gatherings, potlucks, or a cozy dinner at home. It's easy to prepare and provides a nutritious and satisfying meal.

Instructions:

1. Preheat Oven:
Preheat your oven to 350°F (175°C).
2. Prepare Vegetables:
- Fill a large pot with water and bring it to a boil.
- Add the green beans and cook them for about 3-4 minutes until tender-crisp. Drain and set aside.
- In a medium-sized skillet, melt the butter over medium heat.
- Add the chopped onions and celery, and sauté for about 5 minutes until they become soft and translucent.
- Add the sliced mushrooms and cook for an additional 4-5 minutes until the mushrooms are tender and release their juices.
3. Prepare the Sauce:
- Stir in the chicken broth and heavy whipping cream into the vegetable mixture.
- Season with a dash of salt and black pepper (adjust to taste).
- Bring the mixture to a simmer and cook for about 3-4 minutes, stirring occasionally, until the sauce thickens slightly.
4. Combine Ingredients:
- In a large mixing bowl, combine the cooked green beans, the sautéed vegetable mixture, and the drained and flaked tuna. Mix well to combine.
- Stir in half of the shredded cheddar cheese (about 1.5 cups) until well incorporated.
5. Assemble the Casserole:
- Transfer the tuna and green bean mixture into a greased 9x13-inch baking dish.
- Spread the remaining shredded cheddar cheese evenly over the top of the casserole.
6. Bake:
- Place the baking dish in the preheated oven.
- Bake for 20-25 minutes, or until the cheese on top is melted, bubbly, and golden brown.
7. Serve:
- Remove the casserole from the oven and let it sit for a few minutes before serving.
- Scoop out portions onto plates and enjoy your delicious Tuna and Green Bean Casserole!

Once your Tuna and green bean casserole is golden and bubbling, it's ready to be enjoyed. Serve it hot and relish the delicious blend of creamy, cheesy, and savory flavors. Perfect as a main course or a side dish, this casserole will surely become a favorite in your household.

Tuna and green bean casserole FAQ:

How long should I bake the casserole for?

Bake the Tuna and Green Bean Casserole for 20-25 minutes, or until the cheese is melted, bubbly, and golden brown.

What size baking dish is recommended?

Use a 9x13-inch baking dish to assemble the casserole, which is ideal for this quantity of ingredients.

Can I use fresh or frozen green beans instead of canned?

Yes, you can use fresh or frozen green beans. Just ensure they are cooked until tender-crisp before combining them with the other ingredients.

What can I substitute for heavy whipping cream?

You can substitute heavy whipping cream with half-and-half or a mixture of milk and sour cream for a lighter option, but the texture and richness may vary.

How should I store leftovers?

Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. Reheat in the oven for best results.

Cooking Tips:

- Blanch the green beans in boiling water for 2-3 minutes before adding them to the casserole to keep them vibrant and crisp.

- Use fresh mushrooms for the best flavor and texture; however, canned mushrooms can be a good substitute if you are short on time.

- For added crunch, sprinkle some breadcrumbs or crushed potato chips on top before baking.

- Feel free to experiment with different types of cheese; a mix of cheddar and mozzarella can add a delightful flavor twist.

- To make the dish healthier, you can substitute some or all of the heavy whipping cream with low-fat milk or a non-dairy alternative like almond milk.

Nutrition Facts

6 Servings
Calories 450kcal
Protein 27g
Carbohydrates 9g
Fiber 2.35g
Sugar 4.21g
Fat 36g

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