Description

Mushroom Polenta Casserole is a hearty and comforting vegetarian dish that layers creamy, cheesy polenta with savory sautéed mushrooms and herbs, baked to perfection. This casserole blends rich earthy flavors with smooth textures, making it an ideal main course or side dish for cozy dinners and meal prepping.

Ingredients

1 cup polenta (coarse cornmeal)
4 cups water or vegetable broth
2 tablespoons olive oil
1 pound mushrooms, sliced (cremini, button, or mixed)
1 medium onion, finely chopped
3 cloves garlic, minced
1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried thyme)
1/2 cup grated Parmesan cheese (or vegetarian hard cheese)
1 cup shredded mozzarella cheese
Salt and black pepper, to taste
Fresh parsley, chopped (for garnish)

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Instructions

Cook the Polenta: Bring water or vegetable broth to a boil. Gradually whisk in polenta, reduce heat to low, and cook 20-25 minutes until thick and creamy. Stir in Parmesan, season with salt and pepper, then remove from heat.
Prepare the Mushrooms: Heat olive oil in a skillet over medium heat. Sauté onions until translucent (about 5 minutes). Add garlic and thyme, cook 1 minute.
Cook the Mushrooms: Add mushrooms, cook 8-10 minutes until moisture evaporates and mushrooms brown. Season with salt and pepper.
Assemble the Casserole: Preheat oven to 375°F (190°C). Spread half the polenta in a greased baking dish. Layer mushrooms on top, then spread remaining polenta over mushrooms.
Add Cheese and Bake: Sprinkle mozzarella over casserole. Bake uncovered for 20-25 minutes until cheese is melted and bubbly.
Garnish and Serve: Let cool slightly, garnish with fresh parsley before serving.

Notes

Substitute mozzarella with fontina, cheddar, or goat cheese for variety.Add spinach, kale, or roasted red peppers to mushroom layer for extra nutrition.For vegan version, use nutritional yeast or vegan cheese and vegetable broth.Add red pepper flakes for a spicy touch.Store leftovers in airtight containers refrigerated up to 4 days or freeze up to 2 months.Reheat covered with foil in oven or microwave with added liquid if needed.