This oven baked 4-ingredient chicken tetrazzini is the kind of practical, comforting casserole that earned a permanent spot in recipe boxes across the Midwest. Built from just a few pantry-friendly staples, it turns cooked chicken, pasta, and a creamy sauce into a bubbly, crowd-pleasing dinner with the familiar appeal of mid-century church suppers and potlucks. It is easy to see why a recipe like this would be passed around for decades: it is economical, dependable, and deeply satisfying.
Serve it with a crisp green salad, simple steamed green beans, or buttered peas to balance the richness of the casserole. Warm dinner rolls, garlic bread, or a slice of toasted country bread also fit right in, especially if you want something to catch the extra creamy sauce. For drinks, iced tea or a light white wine make easy pairings.
Oven Baked 4-Ingredient Chicken Tetrazzini
Servings: 6 to 8
Ingredients
8 ounces spaghetti, broken in half
2 cups cooked chicken, shredded or chopped
2 cans condensed cream of mushroom soup, 10.5 ounces each
1 cup sour cream
Directions
1. Heat the oven to 350°F and lightly grease a 9-by-13-inch or similar rectangular baking dish.
2. Bring a large pot of salted water to a boil and cook the spaghetti until just tender. Drain well.
3. In a large mixing bowl, combine the cooked spaghetti, shredded chicken, condensed cream of mushroom soup, and sour cream. Stir until the pasta and chicken are evenly coated.
4. Spread the mixture evenly into the prepared baking dish.
5. Bake for 30 to 35 minutes, until hot and bubbling around the edges. Let stand for 5 to 10 minutes before serving.
6. Spoon onto plates or into bowls and serve warm.
Variations & Tips
Breadcrumb Topping: If you want the golden finish suggested by the classic casserole look, scatter 1/2 cup plain or buttered breadcrumbs over the top before baking. It adds a welcome bit of texture to an otherwise soft and creamy dish.
Add a Little Seasoning: Since many older four-ingredient casseroles rely on pantry products for flavor, a pinch of black pepper, garlic powder, or a spoonful of chopped parsley can freshen the dish without changing its character.
Use Leftover Turkey: This recipe works beautifully with leftover roast turkey in place of the chicken, which makes it especially useful after holidays when you want something warm and familiar without much effort.
Make It Ahead: Assemble the casserole up to a day in advance, cover, and refrigerate. When ready to bake, let it sit at room temperature for about 20 minutes first, then add a few extra minutes to the baking time so it heats through evenly.
Prevent Dry Pasta: Be careful not to overcook the spaghetti before it goes into the casserole. Keeping it just tender helps it finish in the oven without becoming overly soft.