Campfire Skillet Brownie with Salted Bone Marrow Caramel

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What's Special
Fudgy brownie baked over open coals, drowned in roasted bone marrow caramel — salty, smoky, obscenely rich.

Where the Smoke Meets the Pine and Something Sweet Gets Obscene

It starts with the bones. Two halved femurs, cut-side up on the grate, fat bubbling in the firelight until the marrow turns golden and pulls from the edges. That’s your campfire skillet brownie sauce — primal, smoky, stupidly rich — and it hasn’t even touched sugar yet. Out here in the lumberjack camp, with pine sap in the air and the last of the hardwood coals glowing orange at your feet, dessert is not an afterthought. It’s the reason you kept the fire alive.

The campfire skillet brownie goes together fast — chocolate and butter melted down in the same cast iron you’ll bake it in, batter folded just enough to come together, poured straight into the pan and covered over the coals. The smell hits you first: dark cocoa, vanilla, that edge of smoke from the fire creeping in through the foil. You rotate the skillet every eight minutes to even out the heat. You watch the edges set. You wait for the center to stop looking wet. This is baking without an oven, and it works because cast iron holds heat like a grudge.

The bone marrow caramel is where this campfire skillet brownie stops being clever and starts being unforgettable. Sugar goes into a dry skillet over the coals — you watch it melt from the outside in, swirling the pan but never stirring, until it hits deep amber. Then cream hits and everything erupts. You whisk in butter, fold in the roasted marrow, finish with a heavy hand of flaky salt. Pour it over the warm brownie while you’re still standing next to the fire, cast iron in hand, coals at your boots. Pass spoons. No plates needed out here.

Finished campfire skillet brownie with salted bone marrow caramel drizzled over top, served in cast iron skillet
A fudgy campfire skillet brownie baked over open coals, finished with a roasted bone marrow caramel that's salty, smoky, and devastatingly rich.

Why This Campfire Skillet Brownie?

Most campfire desserts are an afterthought — s’mores thrown together because someone remembered to pack marshmallows. This campfire skillet brownie is different. Bone marrow caramel brings a depth you can’t fake: beefy, smoky, salty-sweet in a way that makes regular caramel sauce taste one-dimensional. The cast iron creates a crust on the brownie bottom that a baking pan never could. And the open fire introduces just enough smoke and char to make every bite taste like it was earned. This is the campfire dessert for people who take fire seriously.

FAQ

Can I use store-bought caramel instead of making bone marrow caramel?

You can, but you’ll miss the whole point. The roasted bone marrow adds a savory, smoky depth that transforms the caramel into something completely different. If you don’t have marrow bones, brown butter caramel is the closest acceptable substitute — use 3 tablespoons of browned butter in place of the marrow.

How do I know when the campfire skillet brownie is done without an oven thermometer?

Look at the edges — they should be fully set and starting to pull away from the skillet. The center should have just a slight jiggle when you gently shake the pan, not a liquid slosh. A toothpick inserted 1 inch from the edge should come out with moist crumbs, not wet batter. It will continue to cook slightly from residual heat after you pull it off the fire.

What type of wood gives the best flavor for baking over coals?

Hardwoods are non-negotiable — oak, beech, hickory, or cherry. They burn hot and produce dense, long-lasting coals with minimal ash. Softwoods like pine burn fast, spike in temperature, and add a resinous taste you don’t want near your brownie. Build your fire at least 30–45 minutes before you plan to bake so you’re working with coals, not flames.

Fire Kitchen Pro Tip

Roast your marrow bones directly on the grate while your fire is still building — they only need 8–10 minutes and you’d otherwise waste that heat. Scoop the marrow immediately while it’s liquid and hot. If it cools and solidifies before you make the caramel, gently warm it in the small skillet for 2 minutes before adding it to the sauce. Cold marrow seizes the caramel.

The Recipe

Campfire Skillet Brownie with Salted Bone Marrow Caramel

A dense, fudgy campfire skillet brownie baked directly over open coals — finished with a roasted bone marrow caramel so rich it borders on obscene. This is the campfire skillet brownie that changes what you think dessert can be outdoors.
Servings 6 people
Prep Time 20 minutes
Cook Time 30 minutes
Bone Marrow Roast 10 minutes
Total Time 1 hour

Equipment

  • 10-inch cast iron skillet
  • Small cast iron skillet or pan
  • Campfire grate or tripod
  • Heat-resistant gloves
  • Whisk
  • Mixing bowl
  • Small spoon or brush
  • Knife and cutting board

Ingredients

Brownie

  • 115 g unsalted butter cut into chunks
  • 170 g dark chocolate (70%+) roughly chopped
  • 200 g granulated sugar
  • 2 large eggs room temperature
  • 1 tsp pure vanilla extract
  • 90 g all-purpose flour
  • 30 g unsweetened cocoa powder
  • 0.5 tsp fine sea salt

Salted Bone Marrow Caramel

  • 2 beef marrow bones center-cut, halved lengthwise
  • 150 g granulated sugar
  • 60 ml heavy cream warmed
  • 1 tsp flaky sea salt plus more for finishing
  • 1 tbsp unsalted butter

Instructions

Build Your Fire

  • Get a hardwood fire going — oak or beech works best. You want a solid bed of glowing coals, not active flames. Push the burning wood to one side and let the coals build up for about 30 minutes before you cook. You’re looking for even, sustained heat, not scorching spikes.

Roast the Bone Marrow

  • Season the halved marrow bones with a pinch of flaky salt. Place them cut-side up directly on the grate over medium-high coals. Roast for 8–10 minutes until the marrow is bubbling, slightly pulling away from the bone, and has a golden-brown edge. Don’t overcook — you want it just set, not liquid and lost to the fire.
  • Using a small spoon, scoop out all the roasted marrow into a heatproof bowl. You should get roughly 3–4 tablespoons. Set aside. This fat is your gold — smoky, beefy, and insanely rich.
    Cast iron skillet with brownie batter being placed over glowing hardwood coals on campfire grate

Make the Brownie Batter

  • Place the cast iron skillet over low coals. Add the butter and chopped dark chocolate. Stir gently until completely melted and smooth. Pull the skillet off the direct heat — you want it warm, not scorching.
  • Whisk the sugar into the melted chocolate mixture until combined. Add the eggs one at a time, whisking vigorously after each. Add the vanilla. Fold in the flour, cocoa powder, and sea salt until just combined — a few streaks are fine. Do not overmix.

Bake Over the Coals

  • Spread the batter evenly in the skillet. Place over medium coals — not flames. Cover loosely with foil or a lid. Bake for 22–28 minutes, rotating the skillet every 8 minutes for even heat. The brownie is done when the edges are set and the center has just a slight jiggle. Pull it off the fire and let it rest 10 minutes.

Make Bone Marrow Caramel

  • In a small skillet over hot coals, add the sugar in an even layer. Let it melt undisturbed until the edges begin to turn amber. Then gently swirl the pan (no stirring) until the caramel is deep amber — like dark whiskey. Watch it closely. It goes from perfect to burnt in seconds.
  • Pull the skillet off the heat. Carefully add the warm heavy cream — it will bubble violently. Whisk in the butter and then fold in all of your roasted bone marrow. Add the flaky sea salt. Stir until glossy and smooth. If it seizes, return briefly to low heat and stir.

Finish & Serve

  • Pour the bone marrow caramel over the warm skillet brownie directly from the pan. Finish with a heavy pinch of flaky sea salt. Serve straight from the cast iron, scooped out into bowls around the fire. Eat it warm. No plates required.

Notes

Coal control: The biggest variable in campfire baking is heat consistency. Invest time in building your coal bed properly — this is 80% of the recipe. If your coals are too hot, the brownie bottom scorches before the top sets. Too cool and it turns dense and gummy. Aim for coals that glow orange but don’t flame up.
Marrow bones: Ask your butcher for center-cut femur bones, halved lengthwise. They have the most marrow and roast evenly. Avoid knuckle bones — not enough yield.
Caramel fix: If the caramel seizes into a hard mass when you add cream, don’t panic. Place it back over low heat and stir — it will melt back into a smooth sauce.
Make it wilder: Add a tablespoon of bourbon to the caramel with the cream. The alcohol cooks off but leaves a deep, smoky sweetness.
Author: Fabian
Calories: 580kcal
Course: Dessert
Cuisine: American
Keyword: bone marrow caramel, campfire skillet brownie, cast iron dessert, open fire brownie, outdoor dessert

Nutrition

Calories: 580kcal | Carbohydrates: 62g | Protein: 8g | Fat: 34g | Saturated Fat: 19g | Cholesterol: 115mg | Sodium: 420mg | Fiber: 3g | Sugar: 48g

Did you make this recipe?

Please let me know how it turned out for you! Leave a comment below and tag @fire_kitchen_official on Instagram and hashtag it #firekitchen.

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