Big Mac Casserole

Is Big Mac Casserole the Easiest Way to Enjoy a Burger on Keto?

Did you know a single Big Mac sandwich has about 45 grams of carbs, mostly from the buns and the sweet sauce? That is more than many people eat on keto in a whole day. So can you still enjoy that classic burger flavor? Yes, you can, and this Big Mac casserole recipe proves it.

It combines seasoned ground beef, melty cheddar, crunchy pickles, and creamy special sauce in one dish, with no bun at all. It’s a family-friendly keto dinner that takes under an hour and uses ingredients you can find at any grocery store.

Ingredients for Big Mac Casserole

Good flavor starts with simple, quality ingredients. The beef gets savory and browned, the cheese turns golden and bubbly, and the pickles add a tangy bite.

For the beef layer:

• 2 lbs ground beef (80/20 for the best flavor)
• 1/2 cup diced yellow onion
• 2 cloves garlic, minced
• 1 tsp onion powder
• 1 tsp garlic powder
• 1 tsp salt
• 1/2 tsp black pepper

For the egg and cheese base:

• 6 large eggs
• 1/3 cup heavy cream
• 2 cups shredded cheddar cheese, divided

For the special sauce:

• 1/2 cup mayonnaise
• 3 tbsp sugar-free ketchup
• 2 tbsp dill pickle relish (no added sugar)
• 1 tbsp yellow mustard
• 1 tsp white vinegar
• 1 tsp paprika

For the topping:

• 1/2 cup sliced dill pickles
• 1 tbsp sesame seeds
• 1 cup shredded lettuce (optional, for serving)

Easy substitutions:

• Ground turkey or ground chicken works in place of beef.
• Sour cream or cream cheese can replace the heavy cream.
• Pepper jack or Colby jack can stand in for cheddar.
• Unsweetened almond milk can replace the cream if you want less dairy.

How Long Does Big Mac Casserole Take?

• Prep time: 15 minutes
• Cook time: 35 minutes
• Total time: 50 minutes

That’s about 15% faster than a typical 60-minute casserole. Most of the work is browning the beef, and the oven does the rest while you whip up the sauce.

Step-by-Step Instructions

Step 1: Preheat the Oven

Heat your oven to 350°F (175°C). Lightly grease a 9×13-inch baking dish with butter or cooking spray.

Tip: A glass or ceramic dish bakes more evenly than thin metal pans.

Step 2: Brown the Beef

Add the ground beef and diced onion to a large skillet over medium-high heat. Break the meat into small crumbles as it cooks, about 8 to 10 minutes. Drain excess grease, but leave a spoonful for flavor. If you love this kind of beef base, you’ll also enjoy our keto meatball recipe.

Step 3: Season the Meat

Stir in the garlic, onion powder, garlic powder, salt, and pepper. Cook one more minute until fragrant.

Tip: Taste a bite now. Seasoning the beef well is what makes this dish taste like a real burger.

Step 4: Mix the Egg Base

In a bowl, whisk the eggs and heavy cream until smooth. Stir in 1 cup of the cheddar. This creates a fluffy, quiche-like layer that holds everything together.

Step 5: Bake the Big Mac Casserole

Spread the beef evenly in your dish and pour the egg mixture over the top. Bake for 25 minutes, until the eggs are set. Sprinkle the remaining cheddar over the top and bake 5 more minutes, until bubbly and golden.

Step 6: Make the Special Sauce

While it bakes, stir the mayonnaise, ketchup, relish, mustard, vinegar, and paprika together in a small bowl. Chill until ready to serve.

Tip: Making it ahead lets the flavors blend and taste even more like the original.

Step 7: Top and Serve

Let the dish rest for 5 minutes. Drizzle with the sauce, then add pickle slices, sesame seeds, and shredded lettuce. Slice into squares and serve warm.

Nutritional Information

Here are the approximate values per serving of Big Mac casserole, based on 8 servings. Exact numbers vary by brand, so use a nutrition calculator if you track closely.

• Calories: 450
• Fat: 36 g
• Protein: 28 g
• Total carbs: 3 g
• Fiber: 1 g
• Net carbs: 2 g
• Sodium: about 750 mg

With only about 2 grams of net carbs, this fits easily into a daily keto limit of 20 to 30 grams. The ketogenic diet is a high-fat, very low-carbohydrate approach designed to shift your body into ketosis, according to StatPearls from the National Library of Medicine. The high protein also helps keep you full for hours, which supports weight management goals.

Healthier Alternatives for the Recipe

You can adjust this big mac casserole to fit different needs without losing the burger flavor:

• Leaner protein: Use 93% lean ground turkey and add a spoonful of olive oil to keep it moist.
• Lower sodium: Choose low-sodium pickles and skip the added salt, since the cheese already adds plenty.
• Dairy-free: Use dairy-free cheese and coconut cream instead of heavy cream.
• Extra veggies: Stir in cauliflower rice or chopped mushrooms to add fiber and volume.
• Lighter sauce: Swap half the mayo for plain Greek yogurt.
• Paleo-friendly: Use avocado-oil mayo and skip the dairy.
• Even lighter: Try our keto Big Mac salad for the same flavors with no baking.

Serving Suggestions

This Big Mac casserole is great on its own, but a few sides take it to the next level:

• A crisp side salad with ranch or vinaigrette
• Roasted broccoli or green beans
• Cauliflower “fries” for a full burger-night feel
• Sliced tomatoes and avocado on the side
• Lettuce cups, so everyone builds their own mini burger bites

For a crowd, set out extra sauce, pickles, and shredded lettuce so people can top their own squares. Kids love it too. Looking for more ideas for the week? Browse our full collection of keto dinner recipes.

Common Mistakes to Avoid

A great Big Mac casserole comes down to a few small details. Watch out for these:

• Skipping the drain: Too much grease makes the casserole soggy. Drain the beef well before baking.
• Overbaking: Eggs turn rubbery when baked too long. Pull it out as soon as the center is set.
• Using lean beef only: Very lean meat can taste dry. Choose 80/20 or add a little fat.
• Adding sauce before baking: Heat can break the sauce and make it greasy. Add it fresh after baking.
• Using sugary ketchup or relish: Regular versions add hidden carbs and can knock a Big Mac casserole out of keto range. Always check labels.
• Not resting the dish: Let it sit 5 minutes so the slices hold together.

Storing Tips for the Recipe

Leftover Big Mac casserole keeps well if you store it safely. The USDA recommends refrigerating leftovers within 2 hours of cooking and reheating them to 165°F, as explained in the USDA Food Safety and Inspection Service leftovers guide.

• Fridge: Store leftovers (without sauce) in an airtight container for up to 4 days.
• Freezer: Freeze individual slices wrapped tightly for up to 2 months. Thaw overnight in the fridge.
• Reheating: Warm in the oven at 350°F for 10 to 15 minutes, or microwave for 1 to 2 minutes. The oven keeps the cheese crisp.
• Meal prep: Brown and season the beef up to 2 days ahead. Make the sauce up to 5 days ahead.
• Keep it fresh: Add lettuce, pickles, and sauce only when serving.

Conclusion

This Big Mac casserole turns America’s favorite burger into an easy low-carb, one-dish dinner. You get seasoned beef, melted cheese, pickles, and creamy sauce without the bun. Try the recipe tonight, leave a comment below to tell us how it turned out, and subscribe for more keto updates.

FAQs About Big Mac Casserole

Big Mac Casserole

Recipe by Leese

0.0 from 0 votes

Course: DinnerCuisine: American

Servings

8

servings

Prep time

15

minutes

Cooking time

35

minutes

Total time

50

minutes

An easy keto big mac casserole with seasoned ground beef, melted cheddar, pickles, and homemade special sauce. Only 2g net carbs per serving.

Ingredients

• 2 lbs ground beef (80/20)

• 1/2 cup diced yellow onion

• 2 cloves garlic, minced

• 1 tsp onion powder

• 1 tsp garlic powder

• 1 tsp salt

• 1/2 tsp black pepper

• 6 large eggs

• 1/3 cup heavy cream

• 2 cups shredded cheddar cheese, divided

• 1/2 cup mayonnaise

• 3 tbsp sugar-free ketchup

• 2 tbsp dill pickle relish (no added sugar)

• 1 tbsp yellow mustard

• 1 tsp white vinegar

• 1 tsp paprika

• 1/2 cup sliced dill pickles

• 1 tbsp sesame seeds

• 1 cup shredded lettuce (optional)

Directions

• Preheat the oven:
  Heat your oven to 350°F (175°C) and lightly grease a 9×13-inch baking dish.
• Brown the beef:
  Cook the ground beef and onion in a large skillet over medium-high heat for 8 to 10 minutes, breaking the meat into crumbles. Drain excess grease.
• Season the meat:
  Stir in the garlic, onion powder, garlic powder, salt, and pepper. Cook for 1 more minute.
• Mix the egg base:
  Whisk the eggs and heavy cream until smooth, then stir in 1 cup of cheddar.
• Bake:
  Spread the beef in the dish, pour the egg mixture over it, and bake for 25 minutes. Top with the remaining cheddar and bake 5 more minutes until bubbly and golden.
• Make the special sauce:
  Stir the mayonnaise, ketchup, relish, mustard, vinegar, and paprika together and chill.
• Top and serve:
  Rest the casserole for 5 minutes, drizzle with sauce, and top with pickles, sesame seeds, and lettuce.