Mushroom and Swiss Cheeseburger Casserole

Embark on a culinary adventure that marries the heartiness of a classic cheeseburger with the savory richness of mushrooms in our Mushroom and Swiss Cheeseburger Casserole. This comforting masterpiece encapsulates the essence of a beloved American classic, transforming it into a convenient and delectable casserole. Join us on this epic journey as we explore the intricacies of crafting the perfect Mushroom and Swiss Cheeseburger Casserole—a dish that pays homage to tradition while embracing modern culinary convenience.


For the casserole:

  • 1.5 pounds ground beef, ensuring high quality for maximum flavor
  • 1 onion, finely chopped
  • 2 cloves garlic, minced for aromatic depth
  • 8 ounces mushrooms, sliced for a delightful earthy touch
  • Salt and pepper to taste
  • 1 cup Swiss cheese, shredded
  • 1 cup cheddar cheese, shredded
  • 1 cup mayonnaise for a creamy base
  • 1/2 cup sour cream for a tangy kick
  • 1 tablespoon Dijon mustard for a zesty note
  • 1 tablespoon Worcestershire sauce for savory depth

For the keto version:

  • Choose grass-fed beef for a healthier and higher nutrient content.
  • Opt for full-fat, quality Swiss and cheddar cheeses.
  • Use a sugar-free mayonnaise and check other condiments for hidden sugars.
  • Consider incorporating additional keto-friendly vegetables like spinach or kale.

For the low-carb version:

  • Select lean ground beef to reduce overall fat content.
  • Use low-fat Swiss and cheddar cheeses.
  • Opt for a low-carb mayonnaise or Greek yogurt as a substitute.
  • Experiment with cauliflower rice as a lower-carb alternative to traditional rice.


  1. Sauté and Brown:
    • In a large skillet, sauté the finely chopped onion until translucent.
    • Add the minced garlic and continue sautéing until aromatic.
    • Add the ground beef, breaking it into crumbles, and cook until browned.
    • Season with salt and pepper to taste.
  2. Mushroom Magic:
    • Introduce the sliced mushrooms to the skillet, allowing them to cook until softened and golden brown.
    • Stir in the Worcestershire sauce for an extra layer of savory depth.
  3. Cheese Blend Bliss:
    • In a separate bowl, mix together the Swiss and cheddar cheeses.
    • Reserve a portion of the cheese blend for topping and add the rest to the beef and mushroom mixture.
    • Stir until the cheese is melted and fully incorporated.
  4. Creamy Base Creation:
    • In another bowl, combine the mayonnaise, sour cream, and Dijon mustard, creating a creamy and zesty base.
    • Gently fold the creamy mixture into the beef, mushroom, and cheese blend, ensuring every component is coated.
  5. Casserole Assembly:
    • Transfer the mixture into a greased casserole dish, spreading it evenly.
    • Top the casserole with the reserved cheese blend, creating a golden and melty crust.
  6. Bake to Perfection:
    • Bake the Mushroom and Swiss Cheeseburger Casserole in a preheated oven at 350°F (175°C) for 25-30 minutes, or until the top is golden and bubbly.
  7. Serve and Enjoy:
    • Allow the casserole to cool for a few minutes before serving.
    • Garnish with fresh herbs like chives for a burst of color and freshness.

Cook Notes and Variations:

  • Bacon Bliss: Enhance the flavor profile by adding crumbled bacon for a smoky delight.
  • Vegetarian Twist: Substitute the ground beef with plant-based alternatives for a vegetarian-friendly version.
  • Spice Fiesta: Incorporate diced jalapeños or red pepper flakes for a spicy kick.

Keto Versions:

For the keto version, prioritize grass-fed beef, choose full-fat, quality cheeses, opt for sugar-free condiments, and consider adding keto-friendly vegetables like spinach or kale for extra nutrients.

Low-Carb Version:

Adapt the recipe for a low-carb lifestyle by selecting lean ground beef, opting for low-fat cheeses, using a low-carb mayonnaise or Greek yogurt, and experimenting with cauliflower rice as a lower-carb alternative.


As we conclude this culinary journey into Mushroom and Swiss Cheeseburger Casserole, the fusion of flavors and textures invites us to celebrate the beauty of a timeless classic in a modern, convenient form. This detailed guide, enriched with variations for different dietary preferences, equips you to create a dish that harmoniously blends tradition and innovation. So, invite the warmth of this casserole to your table, savor the cheesy, savory goodness, and relish in the joy of culinary fusion. Bon appétit

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