Description
There’s something truly comforting about a cheesy, golden casserole fresh from the oven. The Mushroom & Swiss Hashbrown Bake is perfect for a cozy weekend brunch, a holiday breakfast, or a simple family dinner. Combining earthy mushrooms, creamy hashbrowns, and nutty Swiss cheese, this dish offers a rich, satisfying flavor that appeals to all ages. Inspired by classic diner-style hashbrowns, this recipe elevates a familiar favorite into something special, making it ideal for sharing with family and friends on any occasion.
Ingredients
-
1 (30-ounce) bag frozen shredded hashbrowns, thawed
-
2 tablespoons olive oil
-
1 tablespoon unsalted butter
-
1 medium onion, finely chopped
-
2 cloves garlic, minced
-
10 ounces fresh mushrooms, sliced (white button or cremini)
-
1 teaspoon salt
-
½ teaspoon black pepper
-
1 teaspoon dried thyme or Italian seasoning
-
1 cup sour cream
-
1 (10.5-ounce) can cream of mushroom soup
-
2 cups shredded Swiss cheese, divided
-
½ cup grated Parmesan cheese
-
3 large eggs, lightly beaten
-
2 green onions, chopped (for garnish)
-
2 tablespoons chopped fresh parsley (optional)
Instructions
-
Preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
-
In a large skillet, heat olive oil and butter over medium heat. Add onion and cook 3 minutes until softened. Stir in garlic and mushrooms, cooking 6–8 minutes until mushrooms are golden. Season with salt, pepper, and thyme.
-
In a large bowl, combine sour cream, cream of mushroom soup, 1½ cups Swiss cheese, Parmesan cheese, and beaten eggs. Mix well.
-
Stir in thawed hashbrowns and sautéed mushroom mixture until evenly coated.
-
Spread the mixture into the prepared baking dish. Sprinkle remaining ½ cup Swiss cheese on top.
-
Bake uncovered for 45–50 minutes, until golden and bubbling.
-
Let cool 5 minutes before garnishing with green onions and parsley.
Notes
-
Cheese Substitutions: Gruyère, mozzarella, or provolone work well.
-
Make it Creamier: Add 2–3 tablespoons cream cheese before baking.
-
Crispy Top Tip: Broil 2–3 minutes after baking for extra golden crust.
-
Add Veggies: Spinach, bell peppers, or broccoli can be added.
-
Freezing Instructions: Assemble, cover, and freeze up to 3 months; bake from frozen, adding 15–20 minutes.
- Prep Time: 20 minutes
- Cook Time: 50 minutes