Beans au gratin are the dish that quietly steals dinner — and breakfast, if I’m honest. Black beans simmered in a garlicky, smoky-sweet tomato base, then buried under melting cheese and torched until the top goes dark gold and blistered. I make this one over tortillas and a fried egg in the morning just as often as I make it with a bag of corn chips and a cold beer at night. Two minutes of prep before you even leave the driveway, then twenty minutes of mostly hands-off cooking once the pan hits the fire.
Below you’ll find the full beans au gratin method — what to combine at home before you go, how the pan behaves over coals versus flame, my read on why the torch matters, and the swaps that still work if your cooler looks different than mine. I’ll also get into gear, because a pan this size on a bad grate is how beans end up scorched on one side and cold on the other.
🫘 Why This Recipe Earns Its Spot In My Pack
This isn’t a from-scratch pot of beans — it’s a shortcut built on a real technique. Charro beans in Mexico and the bean dishes of southern Spain both work the same way: build a flavorful base with aromatics and spice, let the beans simmer in it until they’ve soaked up everything around them, then finish with cheese and heat. Canned beans make the campsite version practical. You skip the soak and the hour of simmering, but the seasoning does the same job — nothing here tastes like it came out of a can once it’s done.
🔥 The Gear: Keep It Simple
Beans au gratin need one pan and, if you want the real finish, a small torch. I use a 10-inch cast iron skillet — big enough that the bean layer stays thin and reduces evenly, small enough to balance on a single bed of coals or one burner of a camp stove. The torch is a small butane kitchen torch, the same kind you’d use on a crème brûlée; it lives in my cook kit wrapped in a dish towel so it doesn’t rattle around. If you don’t want to pack one, there’s a workaround below — but the torch gives you a crust nothing else quite matches.
🌶️ Ingredients & What You Can Swap
Garlic and olive oil start everything, but the spices are what make this taste like more than beans. Cumin, smoked paprika, and a pinch of chili flakes go into the hot oil before anything wet touches the pan — that’s called blooming, and it wakes up the oils in the spices instead of leaving them tasting dusty and raw. Use Spanish smoked paprika, pimentón de la Vera, if you can find it. Regular paprika works in a pinch, but it won’t give you that smoky backbone that ties the whole dish together.
- Beans. Black beans are what I reach for, but pinto beans make an even creamier base if that’s what’s in your pantry.
- Cheese. Tex-Mex blend, cheddar, or Monterey Jack all melt smoothly under the torch. Skip anything too dry — it scorches instead of browning.
- Heat. The single pinch of chili flakes keeps this mild. Double it if your crew likes it hot.
- Sweetness. Maple syrup rounds out the tomato paste’s acidity — honey works the same way if that’s what you’re carrying.
🏕️ Before You Leave Home
Beans au gratin start at home: this is a two-container recipe, and I like it that way — less to measure by headlamp. Combine the smoked paprika, cumin, and chili flakes in a small spice jar. In a separate small sealed container, mix the tomato paste with the maple syrup. Both keep for days in a cooler or even just in your food bag, and it means the only knife work left on the spot is two cloves of garlic.
🔥 Cooking Beans au Gratin At The Fire
Set the cast iron pan on the grate over the fire or the BBQ and let it preheat for a full five minutes — you want it properly hot before anything goes in, or the garlic will just steam instead of cook. Add the olive oil, then the garlic, and keep it moving; you’re not trying to brown it, just soften it until the oil smells fragrant. As soon as that happens, stir in your premixed spices with a wooden spoon so nothing sticks to the hot spots.
Add the tomato paste and maple syrup mixture and stir it through the spiced oil. Then add the beans, the water, and salt and pepper to taste. Cover the whole thing with the shredded cheese and let it simmer until most of the liquid has cooked off and the cheese has fully melted — that’s when you know the beans underneath have actually absorbed the flavor instead of just sitting in it. While that happens I’m not standing over the pan — I pop the Pschitt and let it do its thing.
✨ Getting That Torched Top on Beans au Gratin
Once the liquid’s mostly gone and the cheese is melted through, it’s ready to eat as is — but the torch is what turns this from good to the dish people ask about. Run the flame slowly across the surface until it’s deep gold and blistered in spots, the same way you’d finish a crème brûlée. It takes less than a minute, and it adds a faint char that plain melted cheese doesn’t have.
🍽️ How I Serve It
Beans au gratin are a side dish at dinner — next to something grilled, alongside tacos, or scooped straight up with tortilla chips and a cold beer. But it’s just as good in the morning: spoon it over warm tortillas with a fried or scrambled egg on top and you’ve got a outdoor breakfast that doesn’t taste like an afterthought. As written, it serves four as a side or two as a hungrier main.
🧊 Leftovers At Camp
Beans au gratin keep well. Let the pan cool, cover it, and set it in the cooler overnight — the flavor is honestly better the next day once everything’s had time to sit. Reheat it right in the same pan over low heat, adding a splash of water if it’s tightened up too much. I wouldn’t try to torch it a second time; a few minutes covered over gentle heat brings the cheese back without drying it out.
Beans au Gratin
Equipment
- 1 cast iron pan
- 1 Kitchen Torch
Ingredients
Spice Mix (Prep at Home)
- 1 tsp smoked Spanish paprika
- 1 tsp cumin
- 1 pinch chili flakes
Tomato-Maple Base (Prep at Home)
- 1/4 cup tomato paste
- 1 tsp maple syrup
For the Skillet
- 2 tbsp olive oil
- 2 cloves garlic finely chopped
- 1 can (398 ml) black beans drained
- 1/2 cup water (about 1/3 of the bean can)
- salt and pepper to taste
- 1 1/2 cups shredded cheese Tex-Mex, cheddar, or Monterey Jack
Instructions
Make it ahead
- Combine the smoked paprika, cumin, and chili flakes in a small spice container.
- Combine the tomato paste and maple syrup in a small sealed jar.
Over the fire
- Set the cast iron pan on the grate over the fire or the BBQ and preheat for 5 minutes.
- Add the olive oil to the pan, then the garlic, without letting it brown.
- As soon as the oil is fragrant and the garlic starts to soften, stir in the spice mix with a wooden spoon.
- Add the tomato paste and maple syrup mixture, stirring to combine.
- Add the beans, water, salt, and pepper.
- Cover with the shredded cheese.
- Let simmer until almost all the liquid has evaporated and the cheese is fully melted.
- Use the kitchen torch to brown the cheese on top.
Notes
- Making it at home instead of over fire
- Not having a kitchen torch
- Using dried beans instead of canned
- Best cheese for the torched top
- Whether the recipe is spicy
- Prepping ahead and reheating on the spot
- How many it feeds
❓ Frequently Asked Questions
Can I make beans au gratin at home instead of over a fire?
Yes — a stovetop over medium heat and your regular broiler for the last step work just as well as coals and a torch. The technique doesn’t change, just the heat source.
What if I don’t have a kitchen torch?
Use the foil-and-coals method in the note above, or finish it under a home broiler for two to three minutes, watching closely so the cheese doesn’t burn.
Can I use dried beans instead of canned?
You can, but you’ll need to cook them fully ahead of time — this recipe is built around the shortcut that canned beans give you on the spot, so dried beans mean planning a soak and a full boil — K-State Extension has guidance on cooking dried kidney beans long enough to be safe — before you even leave home.
What’s the best cheese for the torched top?
Anything that melts smoothly: a Tex-Mex blend, cheddar, or Monterey Jack. Avoid pre-shredded cheeses coated in anti-caking starch if you can — they melt less evenly under direct heat.
Is this recipe spicy?
Not really — one pinch of chili flakes keeps it mild enough for most people. Add more to the spice mix at home if you want real heat.
Can I prep the whole thing ahead and just reheat it on the spot?
You can prep the spice mix and tomato-maple base ahead, as the recipe calls for, but I’d still cook the beans fresh at the fire — that’s where the flavor actually builds, and it’s only twenty minutes.
How many does this feed?
Four as a side dish, or two as a heartier main, especially if you’re serving it over tortillas with egg.