Sausage and Mushroom Bake

This Sausage and Mushroom Casserole Recipe is made with Italian sausage, onion, mushrooms, jalapeños, cheese, avocado and sour cream.

This is an indulgent delicious casserole that your kids will absolutely love. It is so quick and easy to make and it is a one pot meal, making it so easy to clean up. The combination of the mushroom, sausage and cheese is to die for. The avocado and sour cream give the dish the best flavors ever. Not to mention the jalapeno gives it a nice spicy kick.

If you like this recipe, you need to try my Sausage Breakfast Casserole Recipe or my Shakshuka Recipe.

Jump to:

• What is Sausage and Mushroom Casserole?
• Why you will love this Mushroom and Sausage Casserole
• Sausage and Mushroom Casserole Ingredients
• How to make Sausage and Mushoom Casserole Recipe
• Substitutions
• Variations
• Equipment
• How to store Mushroom and Sausage Casserole
• Sausage and Mushroom Casserole Top Tips
• Sausage and Mushroom Casserole Recipe
• Food safety

What is Sausage and Mushroom Casserole?

A sausage and mushroom casserole is a dish typically made by baking a combination of sausages, mushrooms, onions, and other vegetables in a creamy sauce. The ingredients are typically layered in a casserole dish and then baked in the oven until the sauce has thickened and the sausages are cooked through. It can be served as a main dish, often accompanied by rice or mashed potatoes, or as a side dish. The exact recipe can vary depending on personal preferences and cultural traditions.

Why you will love this Mushroom and Sausage Casserole

There are several reasons why sausage and mushroom casserole is a popular and delicious dish:

• Flavor: The combination of savory sausages and earthy mushrooms creates a rich and satisfying flavor that is hard to resist.
• Versatility: Sausage and mushroom casserole can be made in many different ways, with different types of sausages, mushrooms, and seasonings, making it a versatile dish that can be adapted to suit individual tastes.
• Comfort food: Casseroles are often considered comfort food, and the warmth and heartiness of sausage and mushroom casserole make it a comforting and satisfying meal, especially on a cold day.
• Easy to make: Casseroles are generally easy to prepare, and sausage and mushroom casserole is no exception. Most of the preparation involves chopping and mixing ingredients, and then the casserole is simply baked in the oven, making it a convenient and easy meal option.
• Leftovers: Casseroles often make great leftovers, and sausage and mushroom casserole is no exception. It can be reheated and enjoyed for several days after it is made, making it a great option for meal prepping or feeding a crowd.

Sausage and Mushroom Casserole Ingredients

• Olive oil
• Italian sausage
• Onion
• Red pepper flakes
• Baby bella mushrooms
• Jalapeños
• Cheese
• Avocado
• Sour Cream

See recipe card for quantities for this Sausage and Mushroom Casserole.

How to make Sausage and Mushoom Casserole Recipe

Hint: Instead of baking, you can put on low heat and cover until the cheese melts.

Substitutions

Sausage: I love using hot Italian sausage for this, although you can use sweet Italian sausage.

Onion: I used red onion for this recipe, although you can use white or yellow onion. For the toppings, you can even use pickled onion if you have free time. Red pickled onions are an amazing indispensable ingredient to have in your kitchen. I love the bright pink color, and it’s a great addition to most meals, and deliciously crunchy. They go well on sandwiches, tacos, bowls, avocado toast and salads. It serves as an amazing garnish with a great pop of color.  

Mushroom: I would use button, baby bella or cremini mushroom to pair well and mix it up with the pancetta. You would even try shiitake mushrooms or finely diced portobello mushroom.

Variations

There are many different variations of sausage and mushroom casserole that you can try, depending on your taste preferences and dietary restrictions. Here are a few ideas:

• Italian Sausage and Mushroom Casserole: Use Italian sausage, canned tomatoes, garlic, and Italian seasoning for a flavorful twist on the classic dish.
• Creamy Sausage and Mushroom Casserole: Add cream of mushroom soup or heavy cream to the sauce for a rich and creamy casserole.
• Vegetarian Sausage and Mushroom Casserole: Use vegetarian sausage and vegetable broth instead of meat and chicken broth for a meatless version of the dish.
• Gluten-Free Sausage and Mushroom Casserole: Use gluten-free sausage and a gluten-free flour blend to thicken the sauce for a casserole that is safe for those with gluten sensitivities.
• Keto Sausage and Mushroom Casserole: Use cauliflower instead of potatoes and omit any flour or sugar to create a low-carb, high-fat casserole that is perfect for those following a ketogenic diet.
• Sausage and Mushroom Breakfast Casserole: Add beaten eggs and milk to the casserole, along with the sausages and mushrooms, for a delicious breakfast or brunch option.

Equipment

To make sausage and mushroom casserole, you will need a few pieces of equipment:

• Cast Iron or oven friendly pan: You will need a skillet or sauté pan to cook the sausages, mushrooms, and onions before assembling the casserole. I love using my Caraway pots, pans and baking sheets for best quality. Get yourself a discount by clicking here.
• Cutting Board and Knife: You will need a cutting board and knife to chop the mushrooms, onions, and any other vegetables you are using in the casserole.
• Mixing Bowl and Spoon: You will need a mixing bowl and spoon to combine the ingredients for the casserole sauce.
• Measuring Cups and Spoons: You will need measuring cups and spoons to accurately measure out the ingredients for the casserole sauce.
• Oven: You will need an oven to bake the casserole in.

Check out my Chorizo Breakfast Skillet Recipe.

How to store Mushroom and Sausage Casserole

To store sausage and mushroom casserole, follow these steps:

1. Let the casserole cool completely at room temperature.
2. Cover the casserole dish with a layer of plastic wrap or aluminum foil, making sure to wrap it tightly.
3. Place the casserole in the refrigerator.
4. The casserole can be stored in the refrigerator for up to 3-4 days.
5. If you want to store the casserole for a longer period of time, you can freeze it. To freeze the casserole, cover it with a layer of plastic wrap or aluminum foil, followed by a layer of freezer-safe plastic wrap or aluminum foil. Label the casserole with the date and place it in the freezer.
6. The casserole can be stored in the freezer for up to 2-3 months.
7. When ready to reheat the casserole, thaw it in the refrigerator overnight if frozen, then reheat it in the oven at 350°F (175°C) for about 20-30 minutes or until heated through.

Sausage and Mushroom Casserole Top Tips

Just bake long enough until the cheese melts and bubbles so watch closely.

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Food safety

• Cook to a minimum temperature of 165 °F (74 °C)
• Do not use the same utensils on cooked food, that previously touched raw meat
• Wash hands after touching raw meat
• Don't leave food sitting out at room temperature for extended periods
• Never leave cooking food unattended
• Use oils with high smoking point to avoid harmful compounds
• Always have good ventilation when using a gas stove

See more guidelines at USDA.gov.