Big Mac Casserole
If you’re looking for a cozy, comforting dish that captures the iconic flavors of a Big Mac, then this Big Mac Casserole is just what you need! It’s an easy way to bring the delicious taste of fast food right into your kitchen without any of the fuss. Perfect for busy weeknights or family gatherings, this casserole packs all the goodness of a classic Big Mac into one warm and cheesy dish that everyone will love. Trust me, once you serve this up, it’ll quickly become a favorite in your household too!
Why You’ll Love This Recipe
- Super easy to make: With just a few simple steps, you can whip up this casserole in no time.
- Family-friendly: Kids and adults alike will go crazy for the familiar flavors that remind them of their favorite fast food meal.
- Make-ahead convenience: Prepare it ahead of time and just pop it in the oven when you’re ready to eat!
- Endless leftovers: This casserole tastes even better the next day, so you’ll have plenty to enjoy.

Ingredients You’ll Need
Let’s gather our ingredients! This recipe is all about using simple, wholesome items that you might already have in your pantry. Here’s what you’ll need to create your Big Mac Casserole:
For the Casserole
- 2 lbs ground beef (I use 80/20 for that authentic fast food flavor)
- 1 medium onion, finely diced (about 1 cup)
- 3 cloves garlic, minced (or more, I won’t judge)
- 2 tablespoons Worcestershire sauce
- 1 tablespoon yellow mustard
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 6 chicken hamburger buns, torn into bite-sized pieces (stale ones actually work better!)
- 2 tablespoons butter, melted
- 1 teaspoon sesame seeds
- 1/2 teaspoon garlic powder
For the Special Sauce
- 1 cup mayonnaise (full fat is best here)
- 1/4 cup ketchup
- 2 tablespoons sweet pickle relish (the secret ingredient!)
- 1 tablespoon yellow mustard
- 1 tablespoon white vinegar
- 1 teaspoon sugar
- 1 teaspoon paprika
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
For Toppings
- 2 cups shredded cheddar cheese (the orange kind for that classic look)
- 1 cup shredded lettuce
- 1/2 cup dill pickles, chopped
- 1/4 cup diced onion
- 8 slices American cheese (yes, the plastic-wrapped kind)
Variations
One of the best things about this Big Mac Casserole is how flexible it is! You can easily customize it to suit your taste or dietary preferences. Here are some ideas:
- Swap the protein: Use ground turkey or chicken instead of beef for a lighter option.
- Add veggies: Toss in some bell peppers or mushrooms for extra nutrition and flavor.
- Make it spicy: Add jalapeños or your favorite hot sauce to give it a kick.
- Go gluten-free: Substitute gluten-free hamburger buns to make this dish suitable for gluten-sensitive friends.
How to Make Big Mac Casserole
Step 1: Cook the Beef
Start by browning your ground beef in a large skillet over medium heat. As it cooks, break it apart with a spatula. This step is crucial because browning adds depth and flavor to your casserole. Once it’s fully cooked, drain any excess fat.
Step 2: Sauté the Vegetables
In the same skillet, add your diced onion and minced garlic. Sauté until they’re soft and fragrant—about 5 minutes. This not only enhances their sweetness but also builds layers of flavor in your casserole.
Step 3: Mix in Seasonings
To the beef and veggies, stir in Worcestershire sauce, yellow mustard, salt, pepper, garlic powder, and onion powder. Mix everything well! This seasoning mix is what brings that beloved Big Mac taste to life.
Step 4: Assemble the Casserole
In a large mixing bowl, combine your torn hamburger bun pieces with melted butter and sesame seeds. Then layer half of this mixture at the bottom of a greased baking dish. Next comes the beef mixture followed by dollops of special sauce (which you’ll prepare in the next step). Finish by layering on more bun pieces before topping with shredded cheddar cheese.
Step 5: Make the Special Sauce
In another bowl, whisk together mayonnaise, ketchup, sweet pickle relish, yellow mustard, white vinegar, sugar, paprika, garlic powder, and onion powder until smooth. Drizzle this over your assembled casserole—this is where all those iconic flavors come together!
Step 6: Bake
Cover with foil and bake at 350°F for about 30 minutes. Remove the foil and add slices of American cheese on top before returning it to bake uncovered for an additional 10-15 minutes until bubbly and golden brown.
Step 7: Serve & Enjoy!
Once it’s out of the oven, let it cool slightly before serving. Top with fresh shredded lettuce, chopped pickles, and diced onions for that perfect finishing touch! Enjoy every gooey bite of your homemade Big Mac Casserole with family or friends—you might want to keep this recipe close because it’s bound to be requested again!
Pro Tips for Making Big Mac Casserole
Making a Big Mac Casserole at home is fun and easy, but a few tips can take it from good to absolutely delicious!
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Use Stale Buns: Stale hamburger buns absorb moisture better, creating the perfect texture in your casserole. Fresh buns can turn soggy and that’s not what we want!
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Season Generously: Don’t skimp on the seasoning! The combination of Worcestershire sauce, mustard, and spices is what gives this dish its signature flavor profile—so be liberal with them.
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Layer Wisely: For even cooking, layer your ingredients thoughtfully. Start with the beef mixture, then add the buns, followed by cheese and sauces. This ensures every bite is packed with flavor.
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Let It Rest: After baking, let your casserole sit for about 10 minutes before serving. This helps it set up a bit so you can cut clean squares and keep all those delicious layers intact.
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Customize Your Cheese: Feel free to mix up your cheeses! While cheddar is classic, adding some pepper jack or mozzarella can give you that extra kick or gooeyness you crave.
How to Serve Big Mac Casserole
Serving your Big Mac Casserole is just as important as making it! Here are some ideas to impress your family or guests.
Garnishes
- Shredded Lettuce: Add a handful of fresh shredded lettuce on top right before serving for that crisp crunch reminiscent of the original burger.
- Chopped Tomatoes: Dice up some fresh tomatoes for a splash of color and juiciness that complements the richness of the casserole.
- Extra Pickles: Add some extra dill pickle slices on top to enhance that classic Big Mac flavor.
Side Dishes
- Sweet Potato Fries: Crispy sweet potato fries provide a delightful contrast to the rich flavors of the casserole while adding a touch of sweetness.
- Coleslaw: A creamy coleslaw offers a refreshing crunch that balances perfectly with the hearty casserole.
- Corn on the Cob: Grilled or boiled corn on the cob adds a summery touch, making dinner feel like a backyard barbecue.
- Garlic Breadsticks: Soft garlic breadsticks are always a hit! They’re great for soaking up any leftover sauce on your plate.
Now that you have all these tips and serving suggestions, you’re ready to create an unforgettable Big Mac Casserole experience. Enjoy your cooking adventure!

Make Ahead and Storage
This Big Mac Casserole is perfect for meal prep, allowing you to enjoy delicious leftovers throughout the week. It stores well and is easy to reheat, making it a fantastic option for busy nights or unexpected guests.
Storing Leftovers
- Allow the casserole to cool completely before storing.
- Transfer it to an airtight container and refrigerate.
- Consume within 3-4 days for the best flavor and quality.
Freezing
- Cool the casserole completely before freezing.
- Cut into individual portions or keep it whole based on preference.
- Wrap tightly in plastic wrap and then place in a freezer-safe container or bag.
- Freeze for up to 2-3 months.
Reheating
- For best results, thaw overnight in the refrigerator before reheating.
- Preheat your oven to 350°F (175°C) and bake for about 20-25 minutes until heated through.
- Alternatively, microwave individual portions on high for 1-2 minutes, stirring halfway through.
FAQs
Have questions about this tasty dish? Here are some common ones!
Can I make Big Mac Casserole ahead of time?
Absolutely! You can prepare the casserole up to the baking stage, cover it tightly, and store it in the fridge for up to a day. Just add a few extra minutes to your baking time when you’re ready to cook it.
What are some variations of Big Mac Casserole?
You can customize this recipe by adding different vegetables like bell peppers or swapping out the cheese for your favorites. Feel free to experiment with spices too!
How do I make Big Mac Casserole gluten-free?
To make this dish gluten-free, simply substitute traditional hamburger buns with gluten-free buns. Ensure all sauces and condiments used are certified gluten-free as well.
Is Big Mac Casserole kid-friendly?
Definitely! This casserole is a hit with kids because of its familiar flavors and gooey cheese. It’s a fun way to introduce them to cooking if they want to help!
Final Thoughts
This Big Mac Casserole truly brings comfort food to another level with its warm, cheesy goodness. I hope you enjoy making it as much as my family does! It’s perfect for gatherings or cozy family dinners. Give it a try, and I’m sure it’ll become a favorite in your household too!
Dinner
Big Mac Casserole
Indulge in the comforting warmth of a Big Mac Casserole—a delightful twist on your favorite fast food classic. This easy-to-make dish combines all the iconic flavors of a Big Mac into a cheesy, hearty casserole that’s perfect for busy weeknights or family gatherings. With layers of seasoned ground beef, soft bun pieces, and a rich special sauce, it promises to be a hit with both kids and adults alike. Plus, you can prepare it ahead of time and enjoy the delicious leftovers the next day! Serve it up with fresh toppings for an unforgettable dining experience.
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
- Yield: Serves 8
- Category: Main
- Method: Baking
- Cuisine: American
Ingredients
- 2 lbs ground beef
- 1 medium onion, diced
- 3 cloves garlic, minced
- 6 chicken hamburger buns, torn into bite-sized pieces
- 2 tablespoons butter, melted
- 1 teaspoon sesame seeds
- 1 cup mayonnaise
- 1/4 cup ketchup
- 2 tablespoons sweet pickle relish
- 1 tablespoon yellow mustard
- 1 tablespoon white vinegar
- 1 teaspoon sugar
- 1 teaspoon paprika
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 2 cups shredded cheddar cheese
- 1 cup shredded lettuce
- 1/2 cup dill pickles, chopped
- 1/4 cup diced onion
- 8 slices American cheese
Instructions
- Brown the ground beef in a skillet over medium heat; drain excess fat.
- Sauté diced onion and minced garlic in the same skillet until fragrant.
- Mix Worcestershire sauce, mustard, salt, pepper, garlic powder, and onion powder into the beef mixture.
- In a bowl, combine torn bun pieces with melted butter and sesame seeds; layer half in a greased baking dish.
- Add the beef mixture and dollops of special sauce made from mayonnaise, ketchup, relish, mustard, vinegar, sugar, paprika, garlic powder, and onion powder.
- Top with remaining bun pieces and shredded cheddar cheese.
- Cover with foil and bake at 350°F for about 30 minutes; remove foil and add American cheese slices for an additional 10-15 minutes until bubbly.
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 510
- Sugar: 5g
- Sodium: 830mg
- Fat: 30g
- Saturated Fat: 12g
- Unsaturated Fat: 15g
- Trans Fat: 0g
- Carbohydrates: 34g
- Fiber: 2g
- Protein: 28g
- Cholesterol: 90mg
