Big Mac Casserole
If you’re looking for a fun and delicious twist on a fast food favorite, this Big Mac Casserole is just what you need! Imagine all the iconic flavors of a classic Big Mac—seasoned beef, special sauce, pickles, and onions—baked together into a warm and gooey dish that’ll make your taste buds sing. It’s perfect for those busy weeknights when you want something hearty and satisfying without all the fuss. Plus, it’s great for family gatherings or game nights; trust me, your loved ones will be asking for seconds!
What makes this casserole extra special is how easily it comes together. You get that familiar fast food flavor but in a cozy casserole form that’s sure to become a new family favorite.
Why You’ll Love This Recipe
- Super easy to prepare: With simple steps and straightforward ingredients, this casserole comes together quickly.
- Family-approved: Kids (and adults!) will love the familiar flavors of their favorite burger.
- Perfect for leftovers: Make it ahead of time and enjoy delicious meals throughout the week.
- Customizable: Add your favorite toppings or adjust ingredients based on what you have at home.
- Comfort food at its best: This dish is warm, cheesy, and oh-so-satisfying—a true crowd-pleaser!

Ingredients You’ll Need
Let’s gather some simple and wholesome ingredients to make this delightful Big Mac Casserole! Don’t worry; these are all items you can find at your local grocery store.
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
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 Topping
- 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
This recipe is wonderfully flexible! Feel free to get creative with it based on your personal preferences or what you have in your pantry.
- Swap the protein: Use ground turkey or chicken instead of beef for a lighter option.
- Add veggies: Toss in some sautéed mushrooms or bell peppers for added flavor and nutrition.
- Spice it up: For those who like a kick, add some jalapeños or hot sauce to the mix!
- Make it gluten-free: Use gluten-free buns or skip them altogether and layer everything directly in a baking dish.
How to Make Big Mac Casserole
Step 1: Cook the Beef
Start by browning the ground beef in a large skillet over medium heat. Break it apart with a spatula as it cooks. This step is crucial because we want to develop that rich flavor from the beef. Once it’s cooked through, drain any excess fat if needed.
Step 2: Sauté the Aromatics
Add in the diced onion and minced garlic to the skillet with the beef. Sauté until they become tender and fragrant. This not only enhances their natural sweetness but also infuses your casserole with amazing flavor!
Step 3: Mix in Seasonings
Stir in Worcestershire sauce, yellow mustard, salt, pepper, garlic powder, and onion powder. Let everything simmer together for about 2 minutes. This allows all those delicious spices to meld together beautifully.
Step 4: Prepare the Bun Layer
In a separate bowl, toss the torn hamburger buns with melted butter and sesame seeds until well coated. This will give our casserole that classic burger bun texture right in every bite!
Step 5: Assemble Your Casserole
In a large baking dish, layer half of the bun mixture on the bottom. Then spread out the beef mixture evenly on top. Follow this with dollops of your special sauce made from mayo, ketchup, relish, mustard, vinegar, sugar, paprika, garlic powder, and onion powder. Finally, sprinkle half of the cheddar cheese over everything before adding another layer of buns followed by remaining cheese.
Step 6: Bake It Up!
Preheat your oven to 350°F (175°C) and bake uncovered for about 30 minutes until bubbly and golden brown on top. The aroma will be irresistible!
Step 7: Top It Off
Once it’s out of the oven, let it cool slightly before topping with shredded lettuce, chopped pickles, diced onion, and American cheese slices. Allow these toppings to melt slightly before serving up generous portions!
And there you have it—your very own Big Mac Casserole! Enjoy every cheesy bite with friends or family gathered around your table!
Pro Tips for Making Big Mac Casserole
Making this Big Mac Casserole is a breeze, but a few little tricks can elevate it to the next level!
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Use Stale Buns: Using slightly stale hamburger buns not only helps with texture but also allows them to soak up all that delicious beefy goodness. Fresh buns can get too mushy when baked.
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Don’t Skip the Special Sauce: This is where the magic happens! The combination of mayonnaise, ketchup, relish, and vinegar gives that classic flavor kick that makes this dish taste just like a Big Mac.
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Layering is Key: When assembling your casserole, be sure to layer the ingredients thoughtfully. Start with the beef mixture, then add your buns, followed by cheese. This ensures an even distribution of flavors throughout.
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Let it Rest Before Serving: Allowing the casserole to sit for about 10 minutes after baking helps it set up nicely. This makes it easier to serve and enhances the flavors as everything melds together.
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Feel Free to Customize: Don’t hesitate to throw in extra toppings or spices based on your family’s preferences. Want more crunch? Add some crispy onions or extra pickles!
How to Serve Big Mac Casserole
Serving this casserole can be just as fun as making it! With its hearty nature and familiar flavors, it’s perfect for any casual gathering or family dinner.
Garnishes
- Chopped Fresh Parsley: A sprinkle of fresh parsley adds a pop of color and freshness.
- Extra Pickles: Placing some sliced dill pickles on top right before serving enhances that iconic Big Mac flavor.
- Shredded Lettuce: A handful of shredded lettuce on top adds crunch and brings in that fresh element reminiscent of the classic burger.
Side Dishes
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French Fries: Crispy French fries are a natural choice! They’re perfect for dipping into any extra sauce you might have and complement the casserole’s flavors beautifully.
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Coleslaw: A tangy coleslaw adds a nice crunch and balances out the richness of the casserole. Plus, it’s super easy to make!
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Onion Rings: These crispy delights bring a fun twist and are perfect for those who love a little extra crunch alongside their meal.
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Garden Salad: A light garden salad with fresh veggies can help cut through the richness of the casserole while adding a refreshing note to your plate.
Enjoy crafting this delicious dish! It’s sure to become a family favorite that you’ll want to make again and again.

Make Ahead and Storage
This Big Mac Casserole is perfect for meal prep, allowing you to enjoy that delicious fast-food taste any night of the week. You can easily store it, freeze it, or reheat it without losing those amazing flavors!
Storing Leftovers
- Store leftovers in an airtight container in the refrigerator.
- They will keep well for up to 3-4 days.
- For best results, let the casserole cool completely before sealing.
Freezing
- Allow the casserole to cool completely before freezing.
- Wrap it tightly with plastic wrap, then place it in a freezer-safe container or bag.
- It can be frozen for up to 2-3 months.
- Label and date your casserole for easy identification!
Reheating
- Thaw the casserole overnight in the refrigerator if frozen.
- To reheat, cover with foil and warm in a preheated oven at 350°F (175°C) for about 20-30 minutes or until heated through.
- Alternatively, you can microwave individual portions until hot.
FAQs
Here are some common questions about making and enjoying your Big Mac Casserole!
Can I make Big Mac Casserole ahead of time?
Absolutely! You can prepare the casserole in advance and refrigerate it until you’re ready to bake. This makes it a fantastic option for busy weeknights.
What ingredients give Big Mac Casserole its unique flavor?
The combination of seasoned ground beef, the special sauce made with mayonnaise, ketchup, relish, mustard, along with the classic toppings like lettuce and pickles really captures that iconic Big Mac flavor!
How do I ensure my Big Mac Casserole doesn’t get soggy?
Using slightly stale hamburger buns helps absorb moisture without getting mushy. Also, avoid overcooking the beef to keep everything just right!
Can I customize my Big Mac Casserole?
Definitely! Feel free to add your favorite toppings or adjust the spices to suit your taste. Just remember to keep that classic flavor profile in mind!
Is Big Mac Casserole kid-friendly?
Yes! This dish is a hit with kids and adults alike. It’s a fun twist on their favorite fast food meal that they’ll love digging into!
Final Thoughts
I hope you find this Big Mac Casserole as delightful as my family does! It’s not just a meal; it’s a way to bring everyone together around the table for some comforting fun. Whether you’re enjoying it on a cozy Sunday night or sharing it at a gathering, it’s sure to be a crowd-pleaser. Happy cooking—can’t wait for you to try this recipe and make some delicious memories!
Big Mac Casserole
If you’re craving a comforting and satisfying meal that captures the classic flavors of a beloved fast-food staple, look no further than this Big Mac Casserole. This delightful dish layers seasoned ground beef with a rich special sauce, all topped off with melty cheese and crunchy veggies. Perfect for busy weeknights or gatherings, the Big Mac Casserole is not only easy to prepare but also customizable to suit your family’s preferences. With every bite, you’ll experience the familiar taste of a Big Mac in a warm, cheesy casserole form that promises to be a new family favorite.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: Serves approximately 8
- Category: Dinner
- Method: Baking
- Cuisine: American
Ingredients
- 2 lbs ground beef
- 1 medium onion, finely diced
- 3 cloves garlic, minced
- 6 chicken hamburger buns, torn into bite-sized pieces
- 1 cup mayonnaise
- 1/4 cup ketchup
- 2 tablespoons yellow mustard
- 2 tablespoons Worcestershire sauce
- 1 tablespoon white vinegar
- 1 teaspoon sugar
- 1 teaspoon paprika
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 2 tablespoons butter, melted
- 1 teaspoon sesame seeds
- 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
- Preheat the oven to 350°F (175°C).
- Brown the ground beef in a skillet over medium heat. Drain excess fat.
- Sauté diced onion and minced garlic until tender.
- Mix in Worcestershire sauce, mustard, salt, pepper, garlic powder, and onion powder; simmer for 2 minutes.
- Toss torn hamburger buns with melted butter and sesame seeds.
- In a baking dish, layer half of the bun mixture, followed by the beef mixture and special sauce made from mayonnaise, ketchup, relish, mustard, vinegar, sugar, paprika, garlic powder, and onion powder. Top with half of the cheese and add another layer of buns followed by remaining cheese.
- Bake uncovered for about 30 minutes until golden brown.
- Let cool before topping with shredded lettuce, pickles, diced onion, and American cheese slices.
Nutrition
- Serving Size: 1/8th of casserole (approximately 300g)
- Calories: 480
- Sugar: 6g
- Sodium: 870mg
- Fat: 28g
- Saturated Fat: 12g
- Unsaturated Fat: 14g
- Trans Fat: 0g
- Carbohydrates: 31g
- Fiber: 2g
- Protein: 26g
- Cholesterol: 90mg
