Tuna Mushroom Casserole is a beloved comfort food, known for its creamy sauce, tender noodles, and savory flavor profile. Its roots can be traced back to American home cooking, particularly from the mid-20th century when canned goods became kitchen staples. The casserole emerged as a convenient way to create a filling and satisfying meal with non-perishable ingredients. The combination of tuna, mushrooms, and a creamy base, all topped with breadcrumbs for a crispy crust, has made this easy-to-make dish a timeless classic in many households.
When serving Tuna Mushroom Casserole, consider balance and texture to complement this hearty entree. A crisp green salad dressed with a zesty vinaigrette adds freshness and cuts through the richness of the casserole. Steamed or roasted green beans, asparagus, or Brussels sprouts would offer a vibrant side with a touch of bitterness to round out the meal. For a heartier option, a side of garlic bread can be ideal for soaking up any leftover creamy sauce.
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Tuna Mushroom Casserole

Ingredients:
- 2 cups of egg noodles, cooked and drained
- 1 can (10.5 oz.) of cream of mushroom soup
- 1 cup of milk
- 1 can (12 oz.) of tuna, drained and flaked
- 1 cup of sliced mushrooms
- 1 cup of frozen peas
- 1 cup of shredded cheddar cheese
- Salt and pepper to taste
- 1/2 cup of breadcrumbs
- 2 tablespoons of melted butter
- 1 can (10.5 oz.) of cream of mushroom soup
- 1 cup of milk
- 1 can (12 oz.) of tuna, drained and flaked
- 1 cup of sliced mushrooms
- 1 cup of frozen peas
- 1 cup of shredded cheddar cheese
- Salt and pepper to taste
- 1/2 cup of breadcrumbs
- 2 tablespoons of melted butter
Instructions:
1. Preheat your oven to 375 degrees Fahrenheit.
2. In a large bowl, mix together the cream of mushroom soup and milk until well blended.
3. Stir in the tuna, sliced mushrooms, frozen peas, and cooked egg noodles into the soup mixture. Add salt and pepper to taste.
4. Gently fold in the shredded cheddar cheese, being careful not to break the flaked tuna pieces too much.
5. Transfer the mixture to a greased 9x13 inch baking dish.
6. In a separate small bowl, combine the breadcrumbs with melted butter, then sprinkle this breadcrumb mixture evenly over the top of the casserole.
7. Bake in the preheated oven for 25 to 30 minutes, or until the breadcrumb topping is golden brown and the casserole is bubbling at the edges.
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8. Let it cool for a few minutes before serving warm. Enjoy your comforting and classic Tuna Mushroom Casserole with your choice of sides.