THE SPLIT PLATE / RECIPE

High-Protein Smash Burgers + Fries

One griddle. Two beef grades. Adult plate = 490 cal / 51g protein with keto bun + double smash. Kid plate = same smash technique on a slider roll. The In-N-Out-style sauce is the adult flavor lever — with a 1 tsp harissa cheat that turns it into something you actually want to eat.

YIELD4 servings
TOTAL TIME30 min
COOK METHODSee method
EST. / SERVING~490 cal | ~51g protein
KEY TO SUCCESS: GRIDDLE HOT. Cast iron / flat-top / large skillet on medium-high 4-5 min until a water droplet skitters + evaporates in 2 sec.

Ingredients

CHEESE

  • 6 Velveeta Original slices (4 for adult doubles, 2 for kid singles)

FAT / SEASONING

  • Kosher salt (for the patties)
  • Cooking spray or beef tallow for bun toast

ADULT SAUCE

  • In-N-Out-style spread (~4 tbsp total, 2 tbsp per adult plate)
  • · 1 tbsp yellow mustard
  • · 1 tbsp light mayo (Chosen Foods or Kraft Light)
  • · 1 tbsp ketchup
  • · 1 tbsp pickle juice
  • · 1 tsp harissa (Shuug, NY Shuk, or any) — the twist
  • · Chopped dill pickles to taste

FRIES

  • 3 servings Rally's Famous Fries (2 for adults, 1 split across 2 kids)

ADULT PROTEIN

  • 12 oz 93/7 ground beef (4 x 3 oz patties, 2 patties per adult plate)

ADULT BUN

  • 2 Bettergoods Keto Friendly Hamburger Buns

Option 1

  • 6 oz 80/20 ground beef (2 x 3 oz patties, 1 patty per kid plate)
  • 2 Marketside Brioche Slider Rolls
  • Bottled secret/special sauce (Heinz, TJ's, or similar) — for the burger
  • Ketchup — for the fries

Option 2

  • 6 oz 80/20 ground beef (2 x 3 oz patties, 1 patty per kid plate)
  • 2 Marketside Brioche Slider Rolls
  • Bottled secret/special sauce (Heinz, TJ's, or similar) — for the burger
  • Ketchup — for the fries

Allergens: dairy, eggs, gluten.

AT THE GRIDDLE — beef grade (93/7 adult vs 80/20 kid), patty count (2 vs 1), bun (keto vs brioche slider), sauce (harissa spread adult vs bottled kid), fry portion (full vs half). Same griddle timing, same salt-before-smash, same Velveeta melt. Everything else forks at the plate.

Method

Shared base

  1. 1.SAUCE FIRST. In a small bowl mix 1 tbsp mustard + 1 tbsp light mayo + 1 tbsp ketchup + 1 tbsp pickle juice + 1 tsp harissa + chopped pickles to taste. Set aside. Makes ~4 tbsp = 2 tbsp per adult plate (1 tbsp on burger, 1 tbsp for fry dip).
  2. 2.FRIES. Rally's Famous Fries into the air fryer at 400°F for 15 min. Start these BEFORE the burgers — they finish within 2 min of the burgers.
  3. 3.PORTION. 12 oz 93/7 beef into 4 x 3 oz balls for adults. 6 oz 80/20 beef into 2 x 3 oz balls for kids. Loose balls — don't compress.
  4. 4.GRIDDLE HOT. Cast iron or flat-top on medium-high 4-5 min. Test: water droplet skitters + evaporates in 2 sec.
  5. 5.SALT + SMASH. Beef balls onto the hot griddle — adult 93/7 on one side, kid 80/20 on the other. Pinch of salt on each within 5 seconds. Smash flat with a spatula + parchment to ~1/4-inch thick. Lacy edges = flavor.
  6. 6.MUSTARD FLIP. 2-3 min undisturbed for the crust. Small blob of mustard on the raw top of each patty. Flip. 90 sec on the second side.
  7. 7.CHEESE. Velveeta slice on each patty immediately after the flip. Cover with a metal bowl or the pan lid for 30 sec to trap steam + melt fast.
  8. 8.TOAST BUNS. Keto buns + brioche sliders cut-side down on the griddle in the beef fat, 30-45 sec until golden.

Adult — Keto Bun Double + Spread-with-Harissa

  1. 9.ADULT BUILD. Toasted keto bun bottom + 1 tbsp spread + 2 stacked 93/7 patties (each with Velveeta) + optional pickle chips + toasted keto bun top. Plate with 1 serving Rally's fries + 1 tbsp extra spread on the side for fry dipping.
  2. 10.EAT IMMEDIATELY. Smash burgers lose their crust fast when they sit. Bite through the sauce → cheese → double patty → keto bun in one motion.

Kid — Brioche Slider + Bottled Sauce (NO Harissa) · Option 1

  1. 9.KID BUILD. Toasted brioche slider bottom + squeeze of bottled sauce + 1 x 3 oz 80/20 patty with Velveeta + toasted brioche top. Plate with 1/2 serving Rally's fries + a small puddle of ketchup for dipping.
  2. 10.SERVE. Kids often eat the burger first + graze the fries. Bottled sauce is the 'safe' option — if kid asks about the adult spread, offer the bottled one as an alternative.

Kid — Brioche Slider + Bottled Sauce (NO Harissa) · Option 2

  1. 9.Same slider format, doubled protein. Kid still gets bottled sauce (no harissa) unless they've asked to try adult spread.

SPLIT PLATE SERVING

Adult — Keto Bun Double + Spread-with-Harissa: Serve the adult portion as described above.

Kid — Brioche Slider + Bottled Sauce (NO Harissa): Serve the kid portion as described above.

Keys to success

  • MAKE THE SAUCE FIRST. All spread ingredients + chopped pickles into a bowl before you touch the beef. The sauce is ready to spread the moment the burger comes off the griddle.
  • FRIES BEFORE BURGERS. Air fryer 400°F × 15 min. Start them BEFORE the griddle. Fries and burgers finish within 2 min of each other.

If something fails

Patties don't release from the spatula on smash: Parchment paper between spatula + patty. Or wait 30 sec before lifting — the patty releases itself once the crust forms.

Patty is pale after 3 min on the griddle: Griddle wasn't hot enough. Wait 90 sec more before flipping — sometimes the crust needs more time on cooler surfaces. Or crank heat next batch.

Adult burger falls apart when eaten: Keto buns are more delicate than regular. Toast them slightly longer + wrap the finished burger in parchment for the first 30 sec so the sauce doesn't soak in.

Sauce is too spicy for kid: That's why kid gets a separate bottled sauce. If kid tries adult sauce anyway, offer the bottled sauce as the 'safe' option — don't dilute the adult version.

Fries done before burgers: Hold fries in the air fryer basket at 200°F for up to 5 min to keep them crisp. Or transfer to a wire rack in a 200°F oven — never a plate (steams the crust off).

Cheese didn't melt in time: Cover the patty + cheese with a metal bowl or the pan lid for 30 sec. Traps steam + melts the top of the cheese fast.

Storage and reheating

Store: Best fresh — smash burgers lose their crust fast in the fridge. Sauce holds separately (see below).

Reheat: Don't reheat baked burgers — the crust turns to leather. Cook patties fresh. Spread lives 5 days in the fridge; sauce quality is best within 3.

Lasts: In-N-Out-style spread: 5 days fridge in a sealed jar (pickle juice + acid is the preservative). Raw ground beef: use within 24 hr of purchase, or freeze at portion size. Velveeta: per box date, sealed. Buns: keto bun 3-5 days at room temp, brioche 3 days.

Estimated nutrition

~490 cal | ~51g protein.

thesplitplate.com/recipes/smash-burger-split-plate

High-Protein Smash Burgers + Fries
Split Cook Method™Core Signatures

High-Protein Smash Burgers + Fries

One griddle. Two beef grades. Adult plate = 490 cal / 51g protein with keto bun + double smash. Kid plate = same smash technique on a slider roll. The In-N-Out-style sauce is the adult flavor lever — with a 1 tsp harissa cheat that turns it into something you actually want to eat.

Make this when

Burger craving hits and you want it macro-honest for the adults without cooking two dinners. One griddle, two protein grades — adults get 93/7 doubles on keto buns with an In-N-Out-style spread that packs a harissa kick; kids get 80/20 sliders on brioche with a bottled sauce and ketchup fries. 30 min end-to-end.

Total time
30 min
Yield
4 servings
Protein
~51g
Calories
~490
Cost / serving
$4.00
Allergens and safety

Contains: dairy, eggs, gluten

Packaged ingredients change formulas — check the label on what's actually in your kitchen.

Adjust servings

Ingredients

Adults
Kids

CHEESE

FRIES

FAT / SEASONING

ADULT PROTEIN

ADULT BUN

ADULT SAUCE

  • · 1 tbsp yellow mustard
  • · 1 tbsp light mayo (Chosen Foods or Kraft Light)
  • · 1 tbsp ketchup
  • · 1 tbsp pickle juice
  • · 1 tsp harissa (Shuug, NY Shuk, or any) — the twist
  • · Chopped dill pickles to taste

KID PROTEIN

KID BUN

KID SAUCE

Method

Split point

AT THE GRIDDLE — beef grade (93/7 adult vs 80/20 kid), patty count (2 vs 1), bun (keto vs brioche slider), sauce (harissa spread adult vs bottled kid), fry portion (full vs half). Same griddle timing, same salt-before-smash, same Velveeta melt. Everything else forks at the plate.

2 adult plates (Bettergoods keto bun + 2 x 3 oz 93/7 patties + 2 Velveeta slices + In-N-Out-style spread with harissa + 1 serving Rally's fries + extra sauce for dipping) / 2 kid plates (Marketside brioche slider + 1 x 3 oz 80/20 patty + 1 Velveeta slice + bottled secret sauce + 1/2 serving Rally's fries + ketchup).

Shared base

Cook once — this part works for everyone.

  1. 1
    SAUCE FIRST

    In a small bowl mix 1 tbsp mustard + 1 tbsp light mayo + 1 tbsp ketchup + 1 tbsp pickle juice + 1 tsp harissa + chopped pickles to taste. Set aside. Makes ~4 tbsp = 2 tbsp per adult plate (1 tbsp on burger, 1 tbsp for fry dip).

  2. 2
    FRIES

    Rally's Famous Fries into the air fryer at 400°F for 15 min. Start these BEFORE the burgers — they finish within 2 min of the burgers.

  3. 3
    PORTION

    12 oz 93/7 beef into 4 x 3 oz balls for adults. 6 oz 80/20 beef into 2 x 3 oz balls for kids. Loose balls — don't compress.

  4. 4
    GRIDDLE HOT

    Cast iron or flat-top on medium-high 4-5 min. Test: water droplet skitters + evaporates in 2 sec.

  5. 5
    SALT + SMASH

    Beef balls onto the hot griddle — adult 93/7 on one side, kid 80/20 on the other. Pinch of salt on each within 5 seconds. Smash flat with a spatula + parchment to ~1/4-inch thick. Lacy edges = flavor.

  6. 6
    MUSTARD FLIP

    2-3 min undisturbed for the crust. Small blob of mustard on the raw top of each patty. Flip. 90 sec on the second side.

  7. 7
    CHEESE

    Velveeta slice on each patty immediately after the flip. Cover with a metal bowl or the pan lid for 30 sec to trap steam + melt fast.

  8. 8
    TOAST BUNS

    Keto buns + brioche sliders cut-side down on the griddle in the beef fat, 30-45 sec until golden.

Adult — Keto Bun Double + Spread-with-Harissa

  1. 9
    ADULT BUILD

    Toasted keto bun bottom + 1 tbsp spread + 2 stacked 93/7 patties (each with Velveeta) + optional pickle chips + toasted keto bun top. Plate with 1 serving Rally's fries + 1 tbsp extra spread on the side for fry dipping.

  2. 10
    EAT IMMEDIATELY

    Smash burgers lose their crust fast when they sit. Bite through the sauce → cheese → double patty → keto bun in one motion.

Kid — Brioche Slider + Bottled Sauce (NO Harissa)

  1. 9
    KID BUILD

    Toasted brioche slider bottom + squeeze of bottled sauce + 1 x 3 oz 80/20 patty with Velveeta + toasted brioche top. Plate with 1/2 serving Rally's fries + a small puddle of ketchup for dipping.

  2. 10
    SERVE

    Kids often eat the burger first + graze the fries. Bottled sauce is the 'safe' option — if kid asks about the adult spread, offer the bottled one as an alternative.

Adult plate | Kid plate

2 adult plates (Bettergoods keto bun + 2 x 3 oz 93/7 patties + 2 Velveeta slices + In-N-Out-style spread with harissa + 1 serving Rally's fries + extra sauce for dipping) / 2 kid plates (Marketside brioche slider + 1 x 3 oz 80/20 patty + 1 Velveeta slice + bottled secret sauce + 1/2 serving Rally's fries + ketchup).

Adult plate

Adult — Keto Bun Double + Spread-with-Harissa

51g
Protein
490
Calories

What makes it different

  • 12 oz 93/7 ground beef (4 x 3 oz patties, 2 patties per adult plate)
  • 2 Bettergoods Keto Friendly Hamburger Buns
  • In-N-Out-style spread (~4 tbsp total, 2 tbsp per adult plate)
  • · 1 tbsp yellow mustard
  • · 1 tbsp light mayo (Chosen Foods or Kraft Light)
  • · 1 tbsp ketchup
  • · 1 tbsp pickle juice
  • · 1 tsp harissa (Shuug, NY Shuk, or any) — the twist
  • · Chopped dill pickles to taste
Kid plate

Kid — Brioche Slider + Bottled Sauce (NO Harissa)

22g
Protein
460
Calories

What makes it different

  • 6 oz 80/20 ground beef (2 x 3 oz patties, 1 patty per kid plate)
  • 2 Marketside Brioche Slider Rolls
  • Bottled secret/special sauce (Heinz, TJ's, or similar) — for the burger
  • Ketchup — for the fries

Three keys to success

  1. 1GRIDDLE HOT. Cast iron / flat-top / large skillet on medium-high 4-5 min until a water droplet skitters + evaporates in 2 sec.
  2. 2MAKE THE SAUCE FIRST. All spread ingredients + chopped pickles into a bowl before you touch the beef. The sauce is ready to spread the moment the burger comes off the griddle.
  3. 3FRIES BEFORE BURGERS. Air fryer 400°F × 15 min. Start them BEFORE the griddle. Fries and burgers finish within 2 min of each other.

Go deeper

Storage and nutrition

Storage: Best fresh — smash burgers lose their crust fast in the fridge. Sauce holds separately (see below).

Reheat: Don't reheat baked burgers — the crust turns to leather. Cook patties fresh. Spread lives 5 days in the fridge; sauce quality is best within 3.

Lasts: In-N-Out-style spread: 5 days fridge in a sealed jar (pickle juice + acid is the preservative). Raw ground beef: use within 24 hr of purchase, or freeze at portion size. Velveeta: per box date, sealed. Buns: keto bun 3-5 days at room temp, brioche 3 days.

Meal chainReinvent as Leftover Cheeseburger Tacos— 16 oz pack of 93/7 → 12 oz for adult smash + 4 oz leftover → 10-min cheeseburger taco lunch the next day. Same Velveeta melt, different vehicle.→

Watch the full cook

Brands I use

Bettergoods
Keto Friendly Hamburger Bun (~90 cal / 3g net carbs / 5g protein per bun)
The adult-macro unlock. Regular bun is ~150 cal / 25g carbs; keto swap saves ~60 cal + 22g carbs per burger. That's what makes 490 cal / 51g protein possible with a double patty. Walmart house brand.
Marketside (Walmart)
Brioche Slider Roll (~100 cal / 3g protein per roll)
Kid-approved soft bun in slider size. Kids will eat a soft brioche roll they won't eat a keto bun — kid-specific carb because kids need normal food, not macro-hacked food.
Velveeta
Original Slices (~60 cal / 3g protein / 5g fat per slice)
The correct cheese for smash burgers. Real cheddar can't melt fast enough during the smash's 3-4 min total cook window. Velveeta melts in 30 sec flat — that's why every smash-burger joint uses American / Velveeta.
Rally's
Famous Fries (frozen, 140 cal per adult serving)
Air-fryer at 400°F × 15 min = crispy shoestring fries with zero prep. Adult full serving + kid 1/2 serving keeps portion + macro control. Cross-recipe candidate for any burger/sandwich night.
Shuug
Original Harissa Hot Sauce (1 tsp in the adult spread — ~5 cal / 0.5g fat)
The adult-only twist. Turns an In-N-Out spread from 'familiar' to 'why does this taste better than the drive-through.' Cross-recipe: id 44 halal cart uses the same bottle.

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#beef#smash-burger#burger-night#split-cook#weeknight#high-protein#griddle#in-n-out-style#kid-approved#medium-carb