Creamy Mushroom Baked Ziti That Steals Every Potluck
There are dishes that sit quietly at the end of a potluck table, and then there are dishes that cause a small stampede. This creamy mushroom baked ziti is firmly in the second category. Earthy sautéed mushrooms folded into a rich, garlicky white sauce, tossed with tender ziti, and baked under a golden, bubbling blanket of cheese — it is the kind of comfort food that makes people set down their forks just to ask who made it.
The beauty of this casserole is that it comes together with simple, familiar ingredients, yet the end result tastes like something you would order at a proper Italian trattoria. It travels well, reheats beautifully, and feeds a crowd without breaking the bank. Here is everything you need to recreate it at home.
Ingredients
- 1 pound (450g) ziti pasta
- 3 tablespoons unsalted butter
- 4 cloves garlic, minced
- 1 medium yellow onion, finely diced
- 16 ounces (450g) cremini or button mushrooms, sliced
- 3 tablespoons all-purpose flour
- 2 cups whole milk, warmed
- 1 cup heavy cream
- 1 cup chicken or vegetable broth
- 1 teaspoon dried Italian seasoning
- 1 teaspoon dried parsley, plus extra for topping
- Salt and freshly ground black pepper, to taste
- 1 cup ricotta cheese
- 2 cups shredded mozzarella cheese, divided
- 1 cup freshly grated Parmesan cheese, divided
- Pinch of nutmeg
Method
- Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish and set it aside.
- Bring a large pot of generously salted water to a boil. Cook the ziti according to package directions until just al dente — it will continue cooking in the oven. Drain and set aside.
- In a large, deep skillet or Dutch oven, melt the butter over medium-high heat. Add the onion and cook for about 3 minutes until softened and translucent.
- Add the garlic and cook for another 30 seconds until fragrant. Add the sliced mushrooms and spread them out in an even layer. Let them cook undisturbed for 3 to 4 minutes so they develop a nice golden colour, then stir and cook for another 3 minutes. Season with salt and pepper.
- Sprinkle the flour over the mushroom mixture and stir well to coat. Cook for 1 to 2 minutes to eliminate the raw flour taste.
- Gradually pour in the warmed milk, heavy cream, and broth, stirring constantly to avoid lumps. Bring the mixture to a gentle simmer and cook, stirring frequently, until the sauce thickens — about 5 to 7 minutes.
- Stir in the Italian seasoning, parsley, and a pinch of nutmeg. Taste and adjust salt and pepper as needed. Remove from heat.
- Add the ricotta cheese, half the mozzarella, and half the Parmesan to the sauce. Stir until everything is melted and combined into a smooth, creamy sauce.
- Add the drained ziti to the skillet and toss until every piece of pasta is thoroughly coated in the sauce.
- Transfer the pasta mixture to the prepared baking dish and spread it out evenly. Sprinkle the remaining mozzarella and Parmesan over the top, then finish with a light dusting of dried parsley.
- Bake uncovered for 25 to 30 minutes, until the top is deeply golden and the edges are bubbling. For an extra crispy, caramelised top, switch the oven to broil for the final 2 to 3 minutes — keep a close eye on it.
- Remove from the oven and let the casserole rest for at least 5 minutes before serving. This helps it set slightly and makes it easier to portion.
Tips for the Best Results
Do not skip the step of letting the mushrooms brown properly. Crowding the pan causes them to steam rather than sear, and you will miss out on that deep, savory flavour that makes this dish so irresistible. If your skillet is small, cook the mushrooms in two batches.
Warming your milk before adding it to the roux helps the sauce come together smoothly and quickly without the risk of lumps. A quick 60 seconds in the microwave is all it takes.
If you are making this ahead of time, assemble the casserole completely, cover tightly with foil, and refrigerate for up to 24 hours. When ready to bake, add an extra 10 to 15 minutes to the baking time since it will be going in cold.
Serving Suggestions
This baked ziti is hearty enough to stand alone as a main course, but it pairs wonderfully with a crisp green salad dressed in a sharp vinaigrette, which cuts through the richness of the sauce. A side of warm, crusty garlic bread is practically non-negotiable. For gatherings, it can be doubled easily and baked in two dishes — which, given how quickly it disappears, is never a bad idea.
