My sister Laura lives in outerspace Texas, and we miss each other tons. Two years ago we decided that this summer we would go camping together in Colorado, which is a one day drive for each of us. We invited any other family members who wanted to come, and since our family is awesome, it’s turned into a family reunion, even though Colorado is a two-day drive for our California family. Oh wait…that’s us now, as of 8 days ago. So we are driving 2 days to camp with a total of 23 family members, 13 of whom are under the age of 10. One of them is my 3 month old baby.

IMG_4305 It’s like Christmas all over again. My brother Eric told one of his coworkers last December that he was going to be spending the holidays in a house with 20 relatives, and after seeing the look on the guy’s face had to clarify, “No, you don’t understand, we actually like each other.” I am so excited to hang out with my family in the middle of nowhere, dirt-smeared, booty-frozen, and sleep deprived. It’s going to be epic. If you feel like sharing any tips for camping with kids, I’m all ears.

IMG_4317Sheet cake. It’s a glorious thing. This here is a peanut butter version, and it doesn’t really get any better than this. Oh wait…except when you smear melted chocolate on top of it.



Peanut Butter Sheet Cake

5 from 2 votes
Prep: 15 minutes
Cook: 15 minutes
Total: 30 minutes
Servings: 16 Servings
Sheet cake. It's a glorious thing. This here is a peanut butter version, and it doesn't really get any better than this. Oh wait...except when you smear melted chocolate on top of it.



  • 1/4 cup creamy peanut butter
  • 1 cup water
  • 1/2 cup butter
  • 1 cup sugar
  • 1 cup brown sugar
  • 2 cups flour
  • 1 teaspoon salt
  • 1 teaspoon baking soda
  • 2 eggs
  • 1/2 cup buttermilk
  • 1 teaspoon vanilla


  • 3/4 cup butter
  • 6 tablespoons buttermilk
  • 1/2 cup peanut butter
  • 3 & 1/2 cups powdered sugar
  • 1 tablespoon vanilla
  • melted chocolate, for drizzling (optional)


  • Preheat oven to 375 degrees.
  • For the cake: In a medium pot combine the peanut butter, water, and butter, and bring to a boil. Remove from heat.
  • In a separate bowl, mix together the sugar, brown sugar, flour, salt, and baking soda with a whisk. Add to the peanut butter mixture and combine.
  • Add the eggs, buttermilk, and vanilla to the bowl and mix well.
  • Pour into greased or parchment lined baking sheet that has an edge, such as a 12X17 jellyroll pan. Bake for 15 minutes at 375 degrees, or until a toothpick comes out clean.
  • For the Frosting: In a small pot bring the butter, buttermilk, and peanut butter to a boil. Remove pan from the heat and beat in the powdered sugar and vanilla. Pour frosting over the warm cake.


I didn't have fresh buttermilk, so I did the lemon juice trick. For the half cup called for in the cake, add half a tablespoon of lemon juice or vinegar to a liquid measuring cup, then fill it with milk up to the half cup mark. For the buttermilk in the frosting, I added one teaspoon lemon juice to a liquid measuring cup, then added 5 tablespoons plus 2 teaspoons of milk. Let sit 5 minutes before using.
Source: The Girl Who Ate Everything


Serving: 1slice | Calories: 477kcal | Carbohydrates: 67g | Protein: 6g | Fat: 22g | Saturated Fat: 11g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 7g | Trans Fat: 1g | Cholesterol: 60mg | Sodium: 423mg | Potassium: 145mg | Fiber: 1g | Sugar: 53g | Vitamin A: 495IU | Calcium: 42mg | Iron: 1mg
Course: Dessert
Cuisine: American
Calories: 477
Keyword: Peanut butter, Sheet Cake
Did you make this? I'd love to see it!Mention @thefoodcharlatan or tag #thefoodcharlatan!

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  1. These were fantastic! Next time I’ll have to try the chocolate drizzle, but awesome even without! Hopefully the few that I managed to set aside will turn out well from the freezer. I had been eyeing this recipe for a couple weeks before I finally got around to making it, and I’m glad it made so much because it made it easier to share! (otherwise I would have kept it all to myself!)

    1. Yes, definitely try the chocolate next time, you won’t be able to go back :) So glad you loved this! Thanks for all the comments Kerry! You should go comment on my current post to enter the giveaway I’m doing right now. You have til Tuesday night.

  2. I’ve been on such a peanut butter kick lately. I will have to add this to my list of stuff to make. YUM. With the chocolate, of course!

  3. I’m so making this for the next potluck at Church Karen! It looks awesome. I’ve made variations on Chocolate Sheet Cake, but never a Peanut Butter version.

    Good luck on your camping trip. Chip and I did it one time with Reesy when she was a baby. That was it. Never again. You and your family are way more adventurous and love dirt way more than I do! Tell everyone “HI!” from me! I’ll be sitting on my beautiful front porch reading a book and sipping a lemonade.

  4. Tips for camping with kids:
    1. Bring massive amounts of food. Not food you actually have to cook over a campfire/with a dutch oven/some other method that will take like three hours, but food that you can shove in your mouth as soon as you open the wrapper or baggie. I mean, shove in your kids’ mouths. Right.
    2. Actually that’s my only genius tip.

  5. Peanut butter is my favorite, and I’ve been meaning to make a peanut butter sheet cake for quite awhile now, thanks for reminding me. The melted chocolate drizzle looks delicious on top!

  6. We’re meeting all of my husband’s family in Yellowstone this summer for an entire week of camping and smores. (Because if I have to sleep on the ground we’re having smores NIGHTLY.) Here’s to family and camping!

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