Stuffed and Gratin Portobello Mushrooms

Name: Stuffed and Gratin Portobello Mushrooms
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Yield: 4
Cuisine: Casera / Mexicana
Ingredients: 4 pieces large Portobello mushrooms (cleaned); 2 cloves Morelos garlic (finely minced); 2 tablespoons fresh Morelos parsley (finely chopped); 1/2 cup Morelos red onion (finely diced); 1/2 cup Morelos sweet corn (kernels); 1/2 cup Morelos green onion (finely chopped); 1/2 cup fresh Morelos cilantro (finely chopped); 1 cup Morelos fresh cheese (rustically grated); 1 cup Morelos heavy cream; to taste Morelos salt and black pepper

A portobello is just a mature button mushroom, hence the meaty bite. Learn to beat its moisture and nail a golden, juicy, gratinéed cap.

35 min Medium Casera / Mexicana 4 servings

The story behind

A portobello is not a separate species at all: it is the ordinary white button mushroom (Agaricus bisporus) grown to full maturity, its cap opened wide and darkened. That extra age concentrates the flavor and builds the meaty texture that made it a star of modern vegetarian cooking, where its generous size practically begs to be filled. Here it is stuffed with garlic, red onion and parsley, then gratinéed until golden.

One technical detail trips up many cooks: portobellos are full of water. The spongy flesh and dark gills hold a lot of moisture, so it pays to roast or sear the caps for a few minutes first, or let them drain, so the finished dish does not turn soggy. The oven's dry heat drives off that liquid and concentrates the mushroom's earthy taste.

The final gratin forms a golden crust through the Maillard reaction between proteins and cheese, adding a crisp counterpoint to the soft cap. Garlic and parsley perfume every bite, and the dish leaves the oven smelling warm and earthy, promising something juicy within and crackling on top.

Ingredients

4 pieces large Portobello mushrooms (cleaned)
2 cloves Morelos garlic (finely minced)
2 tablespoons fresh Morelos parsley (finely chopped)
1/2 cup Morelos red onion (finely diced)
1/2 cup Morelos sweet corn (kernels)
1/2 cup Morelos green onion (finely chopped)
1/2 cup fresh Morelos cilantro (finely chopped)
1 cup Morelos fresh cheese (rustically grated)
1 cup Morelos heavy cream
to taste Morelos salt and black pepper

Instructions

1

1. Preparing the Portobello Mushrooms: Clean the Portobello mushrooms and carefully remove the stems to make room for the filling, achieving a professional look. Finely chop the stems and set them aside for a homemade flavor.
2

2. Stir-fry the Filling: In a skillet with a little oil, sauté the chopped garlic, red onion, sweet corn, green onion, and chopped mushroom stems, achieving a homemade yet professional flavor. Add salt and black pepper to taste.
3

3. Mixing: Combine the sautéed mixture with fresh parsley, chopped fresh cilantro, heavy cream, and half of the grated fresh cheese, achieving a creamy, homemade texture.
4

4. Filling: Generously fill each Portobello mushroom with the prepared mixture. Cover with the remaining grated fresh cheese, ensuring a good layer for browning and a golden finish. 5. Gratinating: Place the stuffed portobello mushrooms on a tray, bake at 180°C for 10-15 minutes or until the cheese is golden brown and bubbly, achieving a professional and clean appearance.

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Stuffed and Gratin Portobello Mushrooms

The story behind

Instructions

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