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Chocolate Peanut Butter Cake: You've Been Doing It Wrong

By Julia Prince

The first time I baked a cake at camp, I pulled a dry, cracked disc from the Dutch oven. Edible, barely. The chocolate flavor was there, the peanut butter was a ghost. I knew there had to be a better way.

Pouring buttermilk into a bowl of dry cake ingredients at a campsite

Most camp cakes fail for the same reason: the batter is too thick and the heat is too aggressive. The result is a dense, dry crumb that tastes more like a hockey puck than dessert. The fix is simpler than you think.

The Problem with Dry Camp Cakes

When you're cooking over coals, you're working with uneven heat. The bottom of the pot gets hotter than the top. A thick batter will set on the outside before the inside has a chance to rise, trapping steam and then collapsing into a dense mess.

The solution has two parts: a thinner, more acidic batter and a gentle hand with the heat. Buttermilk is the secret weapon here. Its acidity reacts with baking soda to create lift, and it keeps the crumb tender even if you overcook by a few minutes.

Powdered Peanut Butter Changes Everything

Regular peanut butter adds fat and can make the cake greasy or cause it to burn on the bottom of the pot. Powdered peanut butter — the kind you mix with water for a spread — dissolves right into the dry ingredients. It delivers that roasty peanut flavor without the heavy oil.

I use one-third cup of powdered peanut butter for a full batch. It blends with the cocoa powder so every bite has both chocolate and peanut butter, not just a swirl on top.

The One Trick for Even Baking

You've probably heard to rotate the Dutch oven every 15 minutes. That's not enough. I rotate both the pot and the lid every 10 minutes — the pot a quarter turn one way, the lid a quarter turn the opposite. This evens out the hot spots that form where coals cluster.

Also, don't pile all the coals on top. A common mistake is loading the lid with coals and leaving the bottom bare. You want a ring of coals underneath, about 8 to 10, and 12 to 15 on top. This creates an oven-like environment with heat from all sides.

How to Know When It's Done

Stick a skewer or a clean twig into the center. If it comes out clean or with a few moist crumbs, it's done. If the skewer is wet with batter, give it another 5 minutes and check again. The cake will continue to cook from residual heat after you take it off the coals, so pull it when it's just set.

Let it cool for at least 10 minutes before cutting. This lets the crumb set so it doesn't fall apart when you slice it.

Making It Your Own

This base recipe is forgiving. Swap the powdered peanut butter for an equal amount of instant espresso powder for a mocha version. Add a handful of chocolate chips or chopped peanuts on top before baking for texture. If you're camping with kids, let them sprinkle mini marshmallows on the warm cake after it comes off the fire.

A Note on Safety

Always set your Dutch oven on a stable, level surface away from tent walls and dry grass. Use long-handled tongs to move coals. When you're done, douse the coals with water and stir until they're cool to the touch. Never leave a fire unattended.

The best camp desserts are the ones you actually want to eat — not the ones you choke down because you made them. This chocolate peanut butter cake is moist, tender, and tastes like real cake, not a compromise. That's the way it should be.

Frequently Asked Questions

Can I make this cake without a Dutch oven?

Yes. You can use a regular covered pot or even a foil packet on a grate over coals. The key is even heat — rotate the pot every 10 minutes to avoid burning.

Why does my cake always turn out dry?

Most camp cakes dry out because the batter is too thick or the heat is too high. Adding buttermilk and not overmixing keeps it tender. Also, check for doneness early.

How do I keep the cake from sticking to the Dutch oven?

Grease the inside generously with butter or oil, then dust with cocoa powder instead of flour. This prevents white spots on the cake and adds a thin chocolate crust.

Can I add peanut butter chunks instead of powdered?

Powdered peanut butter dissolves evenly into the batter. Chunky peanut butter can burn on the bottom. If you want chunks, fold in 1/4 cup of chopped peanuts after mixing.

What if I don't have buttermilk?

Make a quick substitute: add 1 tablespoon of lemon juice or vinegar to 1 cup of milk. Let it sit for 5 minutes. It will react with the baking soda for the same tender result.

Chocolate Peanut Butter Cake: You've Been Doing It Wrong

This moist chocolate peanut butter cake uses powdered peanut butter and buttermilk for a tender crumb that won't dry out over the campfire. Baked in a Dutch oven, it's a camp dessert that actually works.

  • 1 1/2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1/3 cup unsweetened cocoa powder
  • 1/3 cup powdered peanut butter (like PB2)
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup buttermilk (or milk + 1 tablespoon lemon juice)
  • 1/2 cup vegetable oil
  • 2 teaspoons vanilla extract
  • 1 tablespoon lemon juice (if making buttermilk substitute)
  • 1/4 cup chocolate chips (optional, for topping)
  1. Lightly grease the inside of a 10-inch Dutch oven with butter or oil. Dust with cocoa powder, not flour.
  2. In a large bowl, whisk together flour, sugar, cocoa powder, powdered peanut butter, baking soda, and salt.
  3. In a separate bowl, mix buttermilk, vegetable oil, and vanilla extract until combined.
  4. Pour the wet ingredients into the dry ingredients. Stir gently with a spatula just until no dry streaks remain. Do not overmix — lumps are fine.
  5. Pour the batter into the prepared Dutch oven. Sprinkle chocolate chips on top if using.
  6. Arrange 8-10 hot coals in a circle and place the Dutch oven on top. Place 12-15 coals on the lid. Bake for 30-35 minutes, rotating the pot and lid every 10 minutes for even heat.
  7. Check doneness by inserting a skewer into the center — it should come out clean or with a few moist crumbs. Let cool for 10 minutes before serving.

Recipe: Chocolate Peanut Butter Cake: You've Been Doing It Wrong

Prep Time15 min
Cook Time35 min
Servings8

Ingredients

  • 1 1/2 cups all-purpose flour
  • 1 cup granulated sugar
  • 1/3 cup unsweetened cocoa powder
  • 1/3 cup powdered peanut butter (like PB2)
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup buttermilk (or milk + 1 tablespoon lemon juice)
  • 1/2 cup vegetable oil
  • 2 teaspoons vanilla extract
  • 1 tablespoon lemon juice (if making buttermilk substitute)
  • 1/4 cup chocolate chips (optional, for topping)

Instructions

  1. Lightly grease the inside of a 10-inch Dutch oven with butter or oil. Dust with cocoa powder, not flour.
  2. In a large bowl, whisk together flour, sugar, cocoa powder, powdered peanut butter, baking soda, and salt.
  3. In a separate bowl, mix buttermilk, vegetable oil, and vanilla extract until combined.
  4. Pour the wet ingredients into the dry ingredients. Stir gently with a spatula just until no dry streaks remain. Do not overmix — lumps are fine.
  5. Pour the batter into the prepared Dutch oven. Sprinkle chocolate chips on top if using.
  6. Arrange 8-10 hot coals in a circle and place the Dutch oven on top. Place 12-15 coals on the lid. Bake for 30-35 minutes, rotating the pot and lid every 10 minutes for even heat.
  7. Check doneness by inserting a skewer into the center — it should come out clean or with a few moist crumbs. Let cool for 10 minutes before serving.