Loaded with mushrooms, potatoes, and a creamy sauce, this mushroom potato casserole recipe is a delicious plant-based main dish but it can be served as a side dish as well. The mushrooms have a meaty texture that is delicious in the cheesy cream-based sauce.
The process of making the mushroom potato casserole requires a few steps. First, you cook the mushrooms with oil, salt, and pepper until they are tender. Then, you make a creamy sauce with butter, flour, cheese, and cream until it is thickened. After that, everything gets layered in a casserole dish with sliced potatoes before being baked in the oven.
What is Mushroom Potato Casserole?
Mushroom potato casserole is a one-pan dish that can make an entire meal. It includes sautéed mushrooms, a creamy cheese sauce, and cooked potatoes that are baked together until the entire mixture is bubbling and hot.
Pro Tips
- When you are making the cheese sauce, blend the flour thoroughly with the butter to make a paste, and cook the mixture for at least a minute or two so that the flour toasts lightly.
- When adding the cream to the flour mixture, gradually whisk it in so that the sauce is smooth without any lumps.
- If you don’t have portobello or shimeji mushrooms, you could replace them with other mushrooms instead. Cremini, white mushrooms, oyster mushrooms, or shiitake mushrooms are all excellent options.
- For added flavor, you can add chopped rosemary or thyme to the cheese sauce.
Frequently Asked Questions
What Type of Cheese Should Be Used in Mushroom Potato Casserole?
Feel free to use whatever type of cheese you prefer, as long as it can melt easily into the sauce. Cheddar, gruyere, mozzarella, gouda, or provolone are all great choices.
Is Mushroom Potato Casserole Suitable for Vegetarian Diets?
Yes, this mushroom potato casserole is perfect for vegetarian diets as it doesn’t contain any meat. The mushrooms add a meaty texture, though, while the combination of cream and cheese add some protein.
Can I Make the Mushroom Potato Casserole Ahead of Time?
Yes, you could! Simply prepare the casserole up to the point where you assemble the casserole, and then you can cover it and place it in the fridge until you want to heat it up in the oven to serve.
How to Store Mushroom Potato Casserole
If you have any leftover mushroom potato casserole, you can cover it tightly with plastic wrap once it has cooled, and store it in the fridge for up to 3 to 4 days. The leftovers will reheat beautifully in the oven when you serve it again.
Ingredients
How to Make Mushroom Potato Casserole
Melt the butter in a saucepan and stir in the flour to make a paste. Whisk in the cream and cook until thickened.
Heat the oil in a pan. Add the mushrooms, salt, and pepper, and cook the mixture for 8 minutes.
Whisk the cheese into the sauce. Arrange one-third of the sauce in a casserole dish.
Melt the butter in a saucepan and stir in the flour to make a paste. Whisk in the cream and cook until thickened.
Continue layering the cream sauce, potatoes, and mushrooms to create another layer of each.
Whisk the cheese into the sauce. Arrange one-third of the sauce in a casserole dish.
Pour the remaining sauce on top and sprinkle the cheese on top. Bake it in a 356 F (180 C) oven for 30 minutes.
Top it with the sliced potatoes followed by a layer of the mushrooms.
Serve immediately!
Continue layering the cream sauce, potatoes, and mushrooms to create another layer of each.
Pour the remaining sauce on top and sprinkle the cheese on top. Bake it in a 356 F (180 C) oven for 30 minutes.
Serve immediately!
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