Can I make Big Mac Casserole ahead of time?

Absolutely. You can assemble everything earlier in the day and store it covered in the refrigerator. When you’re ready to bake, just pop it in the oven. You may need to add 5–10 extra minutes to the cook time if it’s cold from the fridge.

How do I store leftovers?

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave or oven until warmed through. It’s fantastic for meal prep lunches.

Can I freeze Big Mac Casserole?

Yes, but keep in mind that potatoes can change texture slightly after freezing. For best results, freeze before adding fresh toppings like lettuce.

What if I’m not doing Whole30?

Go ahead and add shredded cheese on top during the last 30 minutes of baking. Cheddar works beautifully and makes it extra comforting.

Can I swap the potatoes?

You can try diced sweet potatoes for a slightly sweeter twist. Some readers even use hash browns for convenience.

Big Mac Casserole Bliss: 6-Serving Favorite

Description

This Big Mac Casserole is a healthy, Whole30-friendly twist on the classic burger. Made with seasoned ground beef, crispy potatoes, fresh lettuce, tomatoes, and a creamy special sauce, it’s the perfect family-friendly weeknight dinner or meal prep option.

Ingredients

Scale

1 lb lean ground beef
1 cup white onion, diced
2 russet potatoes, diced (about 4 cups)
1 can diced tomatoes, drained well
1 green bell pepper, diced
1/2 cup chopped dill pickles
1 tbsp white sesame seeds
1/2 cup homemade Special Sauce

For Topping:

Shredded romaine lettuce
Additional diced white onion
Additional chopped dill pickles
Sesame seeds
Diced fresh tomatoes
Extra drizzle of Special Sauce

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Instructions

Preheat oven to 350°F.
In a large skillet over medium heat, cook diced onion and ground beef until beef is browned and onion is translucent.
Drain excess grease and stir in the Special Sauce.
In a large casserole dish, combine diced potatoes, green pepper, chopped pickles, and well-drained diced tomatoes.
Add the beef mixture to the casserole dish.
Sprinkle sesame seeds over the mixture and stir to combine evenly.
Spread into an even layer and cover tightly with foil.
Bake for 1 hour, or until potatoes are fork tender.
Remove from oven and top with shredded lettuce, tomatoes, onions, pickles, sesame seeds, and extra Special Sauce before serving.

Notes

Drain the tomatoes very well to prevent excess moisture.

For stronger burger flavor, use fresh tomatoes as topping instead of canned inside.

If not Whole30 or dairy-free, add 1 cup shredded cheddar during the last 30 minutes of baking.

Leftovers store well for up to 4 days in the refrigerator.

Prep Time: 15 minutes
Cook Time: 1 hour
Category: Casserole
Method: Oven
Cuisine: American

Nutrition

Serving Size: 1 serving
Calories: 420 kcal
Sugar: 5 g
Sodium: 620 mg
Fat: 22 g
Saturated Fat: 7 g
Unsaturated Fat: 13 g
Trans Fat: 0.5 g
Carbohydrates: 28 g
Fiber: 4 g
Protein: 28 g
Cholesterol: 85 mg