This Ground Beef and Mushroom Casserole is a delicious, hearty comfort-food dinner made with seasoned ground beef, tender mushrooms, onions, garlic, a creamy sauce, and melted cheese. Everything is baked together until bubbly, golden, and full of savory flavor.
It is an easy family-friendly meal that works perfectly for busy weeknights, meal prep, or a cozy weekend dinner.
Recipe Information
– Prep Time: 15 minutes
– Cook Time: 30–35 minutes
– Total Time: 45–50 minutes
– Servings: 6
– Course: Main Course
– Cuisine: American
– Cooking Method: Oven-Baked
– Difficulty: Easy
Ingredients
For the Ground Beef and Mushroom Mixture
– 1½ pounds lean ground beef
– 8 ounces fresh mushrooms, sliced
– 1 medium onion, finely chopped
– 3 cloves garlic, minced
– 1 tablespoon olive oil
– 1 teaspoon salt, or to taste
– ½ teaspoon black pepper
– 1 teaspoon paprika
– 1 teaspoon Italian seasoning
– ½ teaspoon onion powder
– ½ teaspoon garlic powder
For the Creamy Sauce
– 1 cup sour cream
– ½ cup cream cheese, softened
– ½ cup beef broth
– 1 tablespoon Worcestershire sauce
– 1 teaspoon Dijon mustard
– ½ teaspoon dried parsley
For the Topping
– 1½ cups shredded cheddar cheese
– ½ cup shredded mozzarella cheese
– 2 tablespoons grated Parmesan cheese
– 1 tablespoon chopped fresh parsley
Optional Additions
– 1 cup baby spinach
– ½ cup diced bell pepper
– 1 cup cooked cauliflower florets
– ½ teaspoon red pepper flakes for a little heat
Instructions
Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C).
Lightly grease a 9 × 13-inch baking dish with cooking spray or a little olive oil. Set aside.
Step 2: Cook the Ground Beef
Heat olive oil in a large skillet over medium heat.
Add the ground beef and cook for approximately 6–8 minutes, breaking it apart with a wooden spoon until browned and fully cooked.
Drain excess grease if necessary.
Season the beef with salt, black pepper, paprika, Italian seasoning, onion powder, and garlic powder. Stir well to distribute the seasonings.
Step 3: Add the Mushrooms and Onions
Add the chopped onion to the skillet and cook for 3–4 minutes until softened.
Stir in the minced garlic and sliced mushrooms.
Cook for another 5–7 minutes, stirring occasionally, until the mushrooms release their moisture and become tender.
Step 4: Prepare the Creamy Sauce
In a medium bowl, combine sour cream, softened cream cheese, beef broth, Worcestershire sauce, Dijon mustard, and dried parsley.
Whisk until smooth and creamy.
If the cream cheese is difficult to mix, allow it to soften at room temperature before combining.
Step 5: Combine Everything
Reduce the heat to low.
Pour the creamy sauce over the cooked ground beef and mushroom mixture.
Stir gently until everything is evenly coated.
If using baby spinach or bell peppers, fold them into the mixture at this stage.
Allow everything to warm together for 2–3 minutes. Do not boil.
Step 6: Assemble the Casserole
Transfer the beef and mushroom mixture into the prepared baking dish.
Spread it evenly with a spoon.
Sprinkle shredded cheddar, mozzarella, and Parmesan cheese over the top.
Step 7: Bake Until Golden and Bubbly
Place the casserole in the preheated oven.
Bake uncovered for 20–25 minutes, or until the cheese is melted, bubbly, and lightly golden around the edges.
For a more golden cheese topping, broil for an additional 1–2 minutes, watching carefully to prevent burning.
Step 8: Rest and Serve
Remove the casserole from the oven and allow it to rest for 5–10 minutes.
Sprinkle with freshly chopped parsley.
Serve warm with a fresh salad, roasted vegetables, or your favorite side dish.
Serving Suggestions
This casserole pairs beautifully with:
– Fresh Mediterranean cucumber and tomato salad
– Steamed broccoli
– Roasted green beans
– Garlic roasted zucchini
– Cauliflower rice
– Mashed potatoes
– Buttered egg noodles
– Crusty garlic bread
For a low-carb meal, serve it with cauliflower rice or steamed broccoli.
Storage Instructions
Refrigerator: Allow the casserole to cool slightly, then transfer leftovers into an airtight container. Refrigerate for up to 3–4 days.
Freezer: Store completely cooled portions in freezer-safe containers for up to 2–3 months for best quality.
Reheating in the Oven: Cover with foil and reheat at 350°F (175°C) until heated through, approximately 15–20 minutes depending on portion size.
Reheating in the Microwave: Place an individual portion in a microwave-safe dish and heat in short intervals, stirring or checking between intervals, until it reaches 165°F (74°C).
Make-Ahead Instructions: Prepare the beef, mushroom, and creamy sauce mixture in advance. Refrigerate it in a covered dish, then add the cheese topping just before baking. Bake until the center is hot and the cheese is melted.
Estimated Nutrition Information
Approximate values per serving, based on 6 servings. Actual nutrition will vary depending on the fat percentage of the beef and the brands of cheese and dairy products used.
Nutrient Amount
Calories 510 kcal
Protein 38 g
Total Fat 36 g
Saturated Fat 17 g
Carbohydrates 7 g
Fiber 1 g
Total Sugar 3 g
Cholesterol 145 mg
Sodium 680 mg
Nut Information and Allergen Details
Does this Ground Beef and Mushroom Casserole contain nuts?
No. The recipe does not include peanuts, almonds, walnuts, pecans, cashews, pistachios, hazelnuts, or other tree nuts.
Peanut Information: No peanuts are included in the recipe.
Tree Nut Information: No tree nuts are included in the listed ingredients.
Nut-Free Preparation: This casserole can be prepared without nuts. Check the labels of packaged ingredients and avoid products with nut-containing additives or cross-contact warnings if cooking for someone with a nut allergy.
Other Allergen Information
– Milk/Dairy: Contains sour cream, cream cheese, cheddar, mozzarella, and Parmesan.
– Soy: Some Worcestershire sauces and packaged seasonings may contain soy. Check ingredient labels.
– Wheat/Gluten: Worcestershire sauce and beef broth may contain gluten or wheat. Choose certified gluten-free products if needed.
– Mustard: Dijon mustard contains mustard.
– Eggs: Not included in the standard recipe, but check packaged ingredients for possible additions or cross-contact.
Important Allergy Note: Although this recipe contains no nuts as written, always check packaged ingredients and preparation surfaces to prevent accidental cross-contamination.
Recipe Tips for the Best Results
1. Use lean ground beef: 85–90% lean ground beef works well and helps prevent the casserole from becoming too greasy.
2. Brown the beef properly: Browning adds a rich, savory flavor to the finished dish.
3. Cook the mushrooms first: Allow their moisture to evaporate before adding the creamy sauce.
4. Soften the cream cheese: Room-temperature cream cheese blends more easily and creates a smoother sauce.
5. Use freshly shredded cheese: Freshly shredded cheese usually melts more smoothly than some pre-shredded varieties.
6. Avoid a watery casserole: Drain excess grease and cook the mushrooms until most of their released liquid evaporates.
7. Let it rest: Resting for 5–10 minutes helps the creamy mixture settle and makes serving easier.
8. Adjust the seasoning: Taste the beef mixture before transferring it to the baking dish.
Frequently Asked Questions (Q&A)
Q1: Can I use ground turkey instead of ground beef?
Yes. Ground turkey is a great alternative. Cook it completely before adding the mushrooms and creamy sauce. The flavor will be slightly lighter.
Q2: What type of mushrooms works best?
White button mushrooms and cremini mushrooms are excellent choices. Cremini mushrooms provide a deeper, richer flavor.
Q3: Can I make this casserole without cream cheese?
Yes. You can replace the cream cheese with additional sour cream or use a suitable cooking cream. The texture may be slightly different.
Q4: Can I use canned mushrooms?
Yes. Drain them thoroughly before adding them to the skillet. Fresh mushrooms generally provide better texture and flavor.
Q5: Is this recipe keto-friendly?
It can fit many low-carb and keto meal plans because it contains protein, fats, and relatively few carbohydrates. Check the nutrition information for your specific ingredients and serving size.
Q6: Can I make this casserole gluten-free?
Yes. Use certified gluten-free beef broth and Worcestershire sauce, and check all seasoning labels to ensure they are gluten-free.
Q7: Can I prepare this casserole ahead of time?
Yes. Prepare the beef and mushroom mixture, combine it with the creamy sauce, and refrigerate in a covered baking dish. Add the cheese topping before baking.
Q8: Why is my casserole watery?
Mushrooms release a lot of moisture while cooking. Make sure to cook them until their liquid has mostly evaporated. Also drain excess grease from the beef.
Q9: Can I add vegetables to this casserole?
Absolutely. Spinach, zucchini, bell peppers, broccoli, and cauliflower are excellent additions. Cook vegetables that release a lot of moisture before combining them with the sauce.
Q10: Can I freeze this casserole?
Yes. Freeze it in individual portions or as a whole casserole in a freezer-safe container. Thaw overnight in the refrigerator before reheating for best results.
Q11: What cheese can I use instead of cheddar?
Monterey Jack, Colby Jack, provolone, or a combination of mozzarella and Parmesan can work beautifully.
Q12: How do I know when the casserole is fully cooked?
The cheese should be melted and bubbly, and the center should be thoroughly hot. If checking with a food thermometer, the center should reach 165°F (74°C) when reheating or when preparing a fully assembled chilled casserole.
Q13: Can I make this recipe without mushrooms?
Yes. Simply leave out the mushrooms and add extra ground beef or vegetables such as zucchini, spinach, or bell peppers.
Q14: Is this casserole suitable for meal prep?
Yes. Divide it into individual airtight containers after cooking. It makes a convenient protein-rich lunch or dinner for several days.
Q15: Can I make this recipe dairy-free?
Yes, but you will need dairy-free sour cream, cream cheese, and shredded cheese alternatives. Check labels for soy and other allergens.
Q16: What is the best way to prevent the cheese from burning?
Bake the casserole uncovered at 375°F (190°C), and keep an eye on the topping near the end. If it browns too quickly, loosely cover it with foil.
Q17: Can I use a different baking dish?
Yes. An approximately 2½–3-quart oven-safe baking dish will work. If using a smaller or deeper dish, the baking time may need adjustment.
Q18: Is this recipe good for children?
Yes. It is a comforting family meal with mild, savory flavors. Reduce the black pepper or omit red pepper flakes if your family prefers a milder taste.
Final Recipe Notes
Ground Beef and Mushroom Casserole is a delicious combination of tender ground beef, savory mushrooms, creamy sauce, and melted cheese. It is easy to prepare, satisfying, and perfect for family dinners.
You can customize it with your favorite vegetables, change the cheese, or make a lower-carb version by serving it without pasta or potatoes.