In-N-Out’s Secret Flying Dutchman 3×3 Is Going Viral—44 Grams of Protein Without the Bun

Fitness enthusiasts and low-carb eaters have found a new favorite menu hack at In-N-Out Burger, and it’s taking over social media.

The 3×3 Flying Dutchman isn’t listed on the regular menu, but it’s becoming one of the chain’s most talked-about “secret menu” creations thanks to its impressive protein content and keto-friendly profile.

According to nutrition graphics circulating online, the burger packs approximately 44 grams of protein while coming in at roughly 550 calories, making it an appealing option for those trying to build muscle or reduce carbohydrate intake.

What Is the Flying Dutchman?

Unlike a traditional burger, the Flying Dutchman skips the bun entirely.

Instead, it consists of:

• Three beef patties
• Three slices of American cheese
• Grilled onions (optional but highly recommended)
• No bun

The result is a high-protein, low-carb meal that has become especially popular among keto, carnivore, and bodybuilding communities.

While the classic Flying Dutchman traditionally includes two patties and two slices of cheese, fans have begun ordering larger variations like the 3×3 for additional protein.

Nutrition Breakdown

The viral version making the rounds online estimates the burger contains:

Because there is no bun, nearly all of the carbohydrates come from the cheese and onions.

Why Fitness Fans Love It

For many gym-goers, finding fast food that’s high in protein without excessive carbohydrates can be difficult.

The Flying Dutchman checks several boxes:

• High protein for muscle recovery
• Very low carbohydrates
• Filling despite its smaller appearance
• Easy to fit into keto or low-carb diets

The protein-to-calorie ratio also compares favorably with many protein shakes and meal replacement products.

There Are Some Trade-Offs

Although protein is the headline, nutrition experts also point out the meal contains:

• High saturated fat
• Significant sodium
• Elevated cholesterol
• Limited fiber
• Few vitamins or vegetables

That means it can fit into a healthy eating plan for some people, but it shouldn’t replace balanced meals that include fruits, vegetables, and whole grains.

For those watching heart health or blood pressure, it’s worth remembering that the burger’s sodium content is estimated to fall between 1,650 and 1,800 milligrams, representing a large portion of the recommended daily limit.

Can You Actually Order It?

Yes.

One of In-N-Out’s biggest attractions is its famous secret menu. While these items aren’t printed on the menu board, employees are generally familiar with popular custom orders.

Customers can typically request:

• Flying Dutchman
• Flying Dutchman with grilled onions
• 3×3 Flying Dutchman
• Mustard-fried Flying Dutchman
• Animal Style modifications

Because every location prepares burgers fresh to order, customizations are usually straightforward.

The Bottom Line

The viral 3×3 Flying Dutchman has become one of the hottest secret menu hacks for anyone looking to maximize protein while minimizing carbohydrates.

At roughly 44 grams of protein and around 550 calories, it offers a satisfying option for keto followers, bodybuilders, and anyone trying to avoid buns. However, like most fast food, it should be enjoyed in moderation due to its high sodium and saturated fat content.

If you’re craving a burger without the bread, this secret menu favorite may be worth trying on your next In-N-Out visit.

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Krish Dhokia

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