Keto Big Mac Casserole Recipe cooked to perfection, served on a plate - Yumaroma Save Pin

Keto Big Mac Casserole Recipe

Comforting low-carb Big Mac casserole baked with ground beef, cheddar cheese, pickles, onions, and famous secret sauce.

Prep Time 15 min
Cook Time 30 min
Servings 6
Difficulty Easy
Calories 480 kcal
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When you want a wholesome, deeply satisfying meal that requires minimal cleanup, this Keto Big Mac Casserole Recipe is a foolproof choice. Pairing beef 80/20, yellow onion, and sharp cheddar cheese, shredded in just 45 min, it offers comforting flavor that family and dinner guests will genuinely savor.

Ingredients

6 servings
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Step-by-Step Instructions

1

Brown Beef & Onions (8 Min)

Preheat oven to 375°F (190°C). Brown ground beef and onions in a skillet; drain fat. Season with salt, pepper, and garlic powder.

2

Assemble & Bake Casserole (20 Min)

Transfer beef to a 9x13-inch dish. Top with chopped pickles and 1.5 cups cheddar cheese. Whisk eggs and heavy cream; pour over beef. **Bake** for 20 minutes until set.

3

Drizzle Secret Sauce & Lettuce (5 Min)

Top baked casserole with remaining cheese, shredded lettuce, and drizzle copycat Big Mac dressing!

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Chef Amara’s Kitchen Secrets & Pro Tips

  • Sugar-Free Relish for Keto: Use sugar-free dill relish in Big Mac dressing to keep net carbs under 4g per serving.
  • Custard Binder Holds Slices: The egg and heavy cream custard binds ground beef into neat slices.

1. Let the Meat Rest Before Slicing: Transfer cooked meat to a cutting board for 5–10 minutes before carving. Resting allows tight muscle fibers to relax and redistribute savory juices evenly throughout the cut. 2. Grate Cheese Fresh from the Block: Pre-shredded cheeses are treated with anti-caking starches that impede smooth melting. Freshly shredded cheese dissolves seamlessly into velvety sauces without graininess. 3. Chef's Kitchen Secret: Sugar-Free Relish for Keto: Use sugar-free dill relish in Big Mac dressing to keep net carbs under 4g per serving.

Chef’s Cooking Guide & FAQs

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Troubleshooting & Quick Fixes

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  • What if the Sauce for Keto Big Mac Casserole Recipe Separates or Feels Greasy?: If a dairy or emulsion sauce breaks, immediately take the pan off direct heat. Vigorously whisk in a tablespoon of hot water, broth, or cream until the velvety sheen re-emulsifies.
  • How to Rescue a Dish That Tastes Overly Salty?: Dilute with additional unsalted liquid (broth, cream, or water), or splash in a small touch of acid like fresh lemon juice or vinegar to soften sharp salinity.
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Storage, Freezing & Reheating Guidelines

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Store leftovers in an airtight glass container in the refrigerator for up to 4 days. Reheat in a preheated 350°F oven or covered skillet over medium-low heat until steaming hot throughout.

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Frequently Asked Questions

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Q: Can I prepare this recipe ahead of time? A: Yes, this dish can be assembled up to 24 hours in advance, kept covered in the refrigerator, and baked or cooked when ready to serve.

Q: Can I substitute common pantry ingredients? A: Yes, this recipe is forgiving. Check our substitution notes in the ingredient card for dairy-free, gluten-free, and vegan alternatives.

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Kitchen Notes & Discussion

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Step 1 of 3

Brown Beef & Onions (8 Min)

Preheat oven to 375°F (190°C). Brown ground beef and onions in a skillet; drain fat. Season with salt, pepper, and garlic powder.

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