Mushroom Macaroni Gratin

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Mushroom Macaroni Gratin: Cozy Comfort Food with Mushrooms and Pasta

When the weather gets chilly, nothing hits the spot quite like a warm, cheesy dish straight from the oven. I recently whipped up this Mushroom Macaroni Gratin at home as a comforting twist on the classic macaroni and cheese. Packed with tender chicken, earthy mushrooms, and gooey mozzarella, it’s the perfect weeknight dinner for when you want something hearty but not complicated.

This recipe is simple enough to make any day of the week and flexible if you want to swap mushrooms or pasta shapes. Let’s dive in!

Tips for the Best Mushroom Macaroni Gratin

• Don’t overcook the pasta
  Cook the pasta just until al dente. Since it finishes cooking in the oven, slightly firm pasta keeps the gratin from turning mushy.

• Use a mix of mushrooms for deeper flavor
  Shiitake adds umami while shimeji brings a mild, slightly sweet flavor. Mixing mushrooms makes the gratin taste richer without extra seasoning.

• Save some mushrooms for topping
  Reserving a few mushrooms for the top adds texture and makes the finished gratin look more rustic and appetizing.

• Add milk gradually to the white sauce
  Pouring the milk in 3–4 times while stirring helps create a smooth, lump-free sauce. Take your time—this step makes all the difference.

• Soy sauce = secret umami boost
  Just a tablespoon enhances the mushrooms and chicken without making the dish taste “Japanese.” It simply adds depth.

• Cheese swap is welcome
  Mozzarella gives you that gooey melt, but you can mix in a little Parmesan or Gruyère for extra richness.

• Watch the bake time
  Since everything is already cooked, you’re really just melting cheese and warming it through. Overbaking can dry it out—6–7 minutes is plenty.

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RECIPE

Servings: 4-5

Time: 40 min

Ingredients:

• 6 oz chicken thigh

• 1/2 onion

• 5 shiitake mushrooms

• 1 pack shimeji mushrooms

• 2 cloves garlic

• 2 cups pasta (macaroni or any short pasta)

• 1 tbsp soy sauce

• olive oil, as needed

• mozzarella cheese, for topping

• parsley, for garnish

White Sauce

• 1 tbsp butter

• 1 tbsp flour

• 1 cup milk

• Salt and pepper, to taste

Instructions:

1. Prep the Ingredients

   Slice the onion thinly.

   Cut the chicken into bite-sized pieces.

   Trim and separate the mushrooms (keep a few pieces aside for topping).

2. Cook the Pasta

   Boil the pasta according to package instructions until al dente.

   Drain and set aside.

3. Cook the Chicken and Mushrooms

   Heat a pan with olive oil over medium heat.

   Add minced garlic and sauté until fragrant.

   Add chicken pieces and cook until lightly browned.

   Add sliced onions and cook until softened.

   Stir in mushrooms, salt, pepper, and soy sauce.

   Cook for a few more minutes until mushrooms are tender.

   Remove most of the mixture to a plate, keeping a few mushrooms for topping later.

4. Make the White Sauce

   In a clean pan, melt butter over medium heat.

   Add flour and stir constantly to form a roux.

   Gradually pour in milk in 3–4 additions, stirring constantly to avoid lumps.

   Season with salt and pepper.

   Cook until thickened into a creamy sauce.

5. Assemble the Gratin

   In an oven-safe dish, layer the cooked pasta first.

   Add the chicken and mushroom mixture on top.

   Pour over the creamy white sauce evenly.

   Sprinkle reserved mushrooms and mozzarella cheese over the top.

6. Bake

   Preheat your oven to 400°F (200°C).

   Bake for 6–7 minutes, or until the cheese is melted and lightly golden.

7. Serve

   Garnish with fresh parsley and enjoy while hot.

My Kitchen Tool: Oven Safe Skillet

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FAQ

Can I make Mushroom Macaroni Gratin ahead of time?

Yes! You can assemble the gratin a few hours ahead and keep it covered in the refrigerator. When ready to eat, bake until the cheese is melted and the dish is heated through.

What type of pasta works best for gratin?

Short pasta like macaroni, penne, fusilli, or shells work best because they hold the creamy sauce well and bake evenly.

Can I make this without chicken?

Absolutely. You can skip the chicken for a vegetarian version or replace it with bacon, sausage, shrimp, or extra mushrooms.

What mushrooms should I use?

Shiitake and shimeji create a rich umami flavor, but cremini, button mushrooms, oyster mushrooms, or maitake also work well.

Why add soy sauce to gratin?

Soy sauce adds a subtle umami depth that enhances the mushrooms and creamy sauce without overpowering the dish.

Can I freeze macaroni gratin?

Yes, although the texture of the sauce may change slightly after thawing. Let it cool completely, store tightly covered, and freeze for up to 1 month.

What cheese works best besides mozzarella?

Mozzarella gives the gratin a gooey texture, but Parmesan, Gruyère, cheddar, or a mix of cheeses can add extra flavor and richness.

How do I keep the white sauce smooth?

Add the milk gradually while stirring constantly. This helps prevent lumps and creates a creamy sauce.

Find More Mushroom Recipes:

Terimayo Mushroom Pizza

Enoki mushroom Nuggets

Mushroom Egg Drop Udon