Best Tuna Casserole (Ready in 30 Minutes!)

Preheat your oven to 425°F (220°C). Grease a 9x13 inch baking dish and set aside. Fill a large pot with water, add a generous amount of salt, and bring to a rolling boil over high heat.

Once the water is boiling, add 12 ounces egg noodles. Cook according to package directions until tender but still with a slight bite (al dente), usually 7-9 minutes. Stir occasionally to prevent sticking. Drain the noodles well but do not rinse them - the starch helps the sauce stick.

In a large mixing bowl, combine the drained noodles, 2 cans condensed cream of mushroom soup, 1 cup shredded cheddar cheese (reserve the other cup for topping), both cans of drained tuna (broken into chunks), 1 cup frozen peas, 1 can sliced mushrooms with their liquid, and ½ cup chopped onion.

Stir everything together until all ingredients are evenly coated in the creamy sauce and well combined. Don't worry if the mixture looks slightly thin - it will thicken beautifully as it bakes. The sauce will bubble up around the noodles and become luxurious.

Pour the noodle mixture into the prepared 9x13 inch baking dish and spread it out evenly. Scatter 2 cups crushed potato chips generously over the top - really go for it with a good thick layer. Then sprinkle the remaining 1 cup shredded cheddar cheese over everything. Add optional seasonings like black pepper or garlic powder if desired.

Bake in the preheated 425°F oven for 15-20 minutes, watching carefully during the last few minutes. The casserole is ready when the cheese is completely melted and bubbly, the edges are slightly golden, and the potato chips are crispy but not too dark. Remove from oven and let stand for 2-3 minutes before serving. Enjoy!