The In-N-Out Flying Dutchman lands around 360–480 calories, depending on patty size and cheese slices.
Carb Load
Protein
Sodium
Basic
- 2 beef patties
- 2 American slices
- No sauces or veg
Lowest carbs
Grilled Onions
- + caramelized onions
- 2–3 g extra carbs
- Slight calorie bump
More flavor
“Animal” Style
- + spread & onions
- Spread adds fat & sugar
- Not gluten-free
Highest calories
Here’s what’s inside: two seasoned beef patties and two slices of American cheese. No bun, no lettuce, no tomato, no spread. That’s why the total swings based on patty weight and cheese slice size. In-N-Out publishes nutrition for standard items, not for this off-menu stack. So the best path is to add up verified components and give a clean range that fits real-world portions.
Calories In The Flying Dutchman Burger: What Changes The Count
Calorie totals shift with three levers: patty weight after cooking, cheese slice weight, and any add-ons like grilled onions or spread. Typical fast-food patties in this category fall near 80/20 beef. A cooked 80/20 patty lands close to 270 kcal per 100 g. American cheese runs about 94–110 kcal per 28 g slice, depending on brand and moisture.
Broad Estimates You Can Trust
Blend those verified numbers with typical portion sizes used in fast-casual kitchens and you land near the 360–480 kcal band. Many diners quote ~380 kcal for the base stack. That figure makes sense if each cooked patty weighs a bit under 60 g and each cheese slice sits near 20–22 g.
Early Summary Table
This first table keeps things wide: standard build, common tweaks, and how much each change nudges the total. These are practical numbers using USDA-style references and the chain’s own nutrition sheets for context.
| Version | Estimated Calories | What’s Different |
|---|---|---|
| Base (2 meat, 2 cheese) | 360–480 kcal | Two cooked patties + two American slices |
| + Grilled Onions | +10–25 kcal | Caramelized onions add a small carb bump |
| “Animal” Style | +80–120 kcal | Thousand-Island-type spread and onions |
| Extra Cheese (1 slice) | +60–110 kcal | Depends on slice size (20–28 g) |
| Extra Patty (1 patty) | +150–240 kcal | Range reflects patty weight after cooking |
Once you set daily calorie needs, the range above helps you budget the rest of the day with less guesswork.
How We Arrived At The Range
There’s no label for the secret burger itself, so we lean on two anchors. First, the chain’s official nutrition sheet lists calories for core menu items like the Double-Double. Second, USDA-based databases provide cooked beef and American cheese values per gram. Combine those, then remove bun, spread, and produce since the bunless stack skips them.
The In-N-Out Anchor
The official sheet lists the Double-Double at about 610 kcal with bun, spread, and produce included. The same PDF outlines ingredients and general nutrition guidance used across the menu. You can double-check totals on the In-N-Out nutrition PDF.
The USDA Anchor
USDA-derived data for cooked 80/20 beef patties center near 270 kcal per 100 g. American cheese slices cluster around 94–110 kcal per 28 g. Those two references let us build a bracket that fits common slice and patty sizes. If your restaurant’s patties cook down to a lighter weight, you’ll sit at the low end; if the patties are denser, you’ll land higher.
Portion Scenarios That Map To Real Orders
Here are three realistic scenarios that show how a small change in patty or cheese weight moves the total. Pick the one that matches what you see on the tray.
Lean Toward The Low End
Assume two cooked patties at ~55 g each and two cheese slices at 20 g each. Beef contributes ~297 kcal (110% of 55 g × 270 kcal/100 g × 2 patties ≈ 297), cheese adds ~124 kcal (2 × ~62). Rounded total: ~420 kcal. Swapping in thinner slices drops closer to ~380 kcal.
Middle-Of-The-Road Build
Assume two cooked patties at ~60 g each and two 24 g slices. Beef lands near ~324 kcal; cheese near ~176 kcal. Rounded total: ~500 kcal. A lighter hand on slices trims this to the mid-400s.
Heavier Patties, Full-Weight Cheese
Assume two cooked patties at ~70 g each and two 28 g slices. Beef contributes ~378 kcal; cheese ~188–220 kcal. Rounded total: ~570–600 kcal. That’s a hefty plate for a bunless stack and usually sits above what most diners report, so it’s the upper ceiling rather than the norm.
Macronutrients: What You’re Getting
This order is almost all protein and fat with trace carbs. Expect protein near 28–40 g. Fat climbs with patty fat percentage and any spread you add. Carbs stay minimal unless you dress it “animal” style. The chain’s cheese carries a decent share of sodium, so hydration and balance at the next meal help.
Why The Carbs Stay Low
No bun, no fries, no sugary sauce by default. Cheese contributes a couple grams, and onions add a sliver. That’s why low-carb eaters like this pick: it fits goals without much editing.
Ingredient-Level Table For Quick Math
Use this component table to ballpark custom orders. The values use USDA-style references that match cooked beef and American slices many kitchens resemble.
| Component | Per-Unit Calories | Notes |
|---|---|---|
| Cooked beef patty (80/20), 60 g | ~162 kcal | Scaled from 270 kcal per 100 g cooked |
| Cooked beef patty (80/20), 70 g | ~189 kcal | Heavier patty raises protein and fat |
| American cheese slice, 20 g | ~62 kcal | Lighter singles |
| American cheese slice, 28 g | ~94–110 kcal | Thicker deli-style slice |
| Grilled onions, 1 serving | ~10–25 kcal | Small sugar bump from caramelization |
| Spread, 1 Tbsp | ~70–90 kcal | Mayo-ketchup-relish style |
How This Compares To A Regular Double Burger
A standard double with bun and spread jumps far past this bunless stack. The chain’s double lands near the low 600s in calories with bread and sauce in the mix. Removing the bun and the Thousand-Island-type spread trims a big chunk of energy, which explains why the bunless stack often sits near the 400-ish mark.
Sodium And Fat: What To Watch
Cheese carries most of the sodium here. Two slices can push 500–700 mg depending on type. If you’re watching sodium, ask for one slice or skip the spread on variants. Fat comes mainly from beef; 80/20 tastes great, and that ratio brings more calories per bite than leaner grinds.
Order Tweaks To Hit Your Targets
Lower Calories Without Losing The Point
- Ask for one cheese slice instead of two.
- Keep grilled onions, skip spread.
- Pair with a side salad or a zero-cal beverage.
Boost Protein, Hold The Extras
- Add a third patty and keep cheese to two slices.
- Stick with mustard and pickles if offered; pass on spread.
- Space your higher-fat meal with a lighter dinner.
Method Notes
The calorie band uses two verified sources. The chain’s official nutrition sheet gives solid context for patties, cheese, and full sandwiches. USDA-style references provide true per-gram numbers for cooked 80/20 beef and American cheese slices. Blending both yields a range that fits what diners report in practice.
Cross-Checks You Can Use
If you’re tracking closely, weigh a leftover patty at home once and keep that number in your notes. Multiply by 2.7 kcal per gram for 80/20 beef (cooked). Add your cheese slice totals based on the slice weight you buy most. This gives you a personal estimate that lines up with USDA numbers without guesswork.
Helpful External References
You can verify the chain’s sandwich totals in the official nutrition PDF. For the beef component, the USDA-based listing for cooked 80/20 patties offers clear per-gram math: beef patty (80/20), cooked. For cheese, a typical 1-oz American slice sits near 94–110 kcal, as shown here: American cheese, 1 oz.
Practical Takeaway
Plan on ~360–480 kcal for the base order. Add small bumps for grilled onions, bigger bumps for spread, and steady increases for extra meat or cheese. That’s it—clean math, reliable anchors, and a stack that’s easy to fit into a day’s plan.
Want a tidy framework for daily planning? Try our calorie deficit guide for step-by-step planning.